| I Blood-Group System | 
              | I-Cell Disease use Mucolipidoses | 
              | I-kappa B Kinase | 
              | I-kappa B Proteins | 
              | I-Research use International Research Information System | 
              | Ia Antigens use Histocompatibility Antigens Class II | 
              | Ia-Like Antigens use Histocompatibility Antigens Class II | 
              | Ia-like Antigens, Human use HLA-D Antigens | 
              | IACR use Internal Advisory Committee on Research | 
              | IADB use Inter-American Development Bank | 
              | IAIMS use Integrated Advanced Information Management Systems | 
              | IAP Elements use Genes, Intracisternal A-Particle | 
              | IAP Pertussis Toxin use Pertussis Toxin | 
              | Iatrogenic Disease | 
              | IBDV use Infectious bursal disease virus | 
              | Iberis amara | 
              | Ibero-American Scientific and Technological Program for Development | 
              | Iboga use Tabernaemontana | 
              | Ibogaine | 
              | Ibotenic Acid | 
              | IBR-IPV Virus use Herpesvirus 1, Bovine | 
              | IBRD use International Bank for Reconstruction and Development | 
              | Ibuprofen | 
              | IC50 use Inhibitory Concentration 50 | 
              | ICAM-1 use Intercellular Adhesion Molecule-1 | 
              | ICD Codes use International Classification of Diseases | 
              | ICD-10 use International Classification of Diseases | 
              | ICD-9 use International Classification of Diseases | 
              | Ice | 
              | Ice Barrier | 
              | Ice Break Up | 
              | Ice Break-Up use Ice Break Up | 
              | Ice Cover | 
              | Ice Cream | 
              | Ice Dam use Ice Jam | 
              | Ice Factories use Ice Industry | 
              | Ice Factory use Ice Industry | 
              | Ice Foods use Ice-cold Foods | 
              | Ice Gorge use Ice Jam | 
              | Ice Hockey use Hockey | 
              | Ice Industries use Ice Industry | 
              | Ice Industry | 
              | Ice Jam | 
              | Ice Lolly use Ice-cold Foods | 
              | Ice Pack use Ice Barrier | 
              | Ice Plant use Mesembryanthemum | 
              | ICE Protease use Caspase 1 | 
              | Ice Skating use Skating | 
              | Ice Storm | 
              | Ice-cold Foods | 
              | Iceland | 
              | Iceland Moss use Cetraria islandica | 
              | Icemakers use Ice Industry | 
              | Icemaking use Ice Industry | 
              | Icemaking Companies use Ice Industry | 
              | Icemaking Company use Ice Industry | 
              | Iceplant use Mesembryanthemum | 
              | ICF use International Classification of Functioning, Disability and Health | 
              | ICHPPC use International Classification of Primary Care | 
              | Ichthyol use Ichthyolum | 
              | Ichthyolum | 
              | Ichthyosiform Erythroderma, Bullous Congenital use Hyperkeratosis, Epidermolytic | 
              | Ichthyosiform Erythroderma, Congenital | 
              | Ichthyosiform Erythroderma, Nonbullous Congenital use Ichthyosis, Lamellar | 
              | Ichthyosis | 
              | Ichthyosis Bullosa of Siemens | 
              | Ichthyosis Vulgaris | 
              | Ichthyosis, Lamellar | 
              | Ichthyosis, Sex-Linked use Ichthyosis, X-Linked | 
              | Ichthyosis, X-Linked | 
              | Ichthyosporea use Mesomycetozoea | 
              | Ichthyotoxinum use Serum anguillae | 
              | Ichtiol use Ichthyolum | 
              | Icosahedral Cytoplasmic Deoxyriboviruses use Iridoviridae | 
              | Icosanoids use Eicosanoids | 
              | ICPC use International Classification of Primary Care | 
              | ICPC-1 use International Classification of Primary Care | 
              | ICPC-2 use International Classification of Primary Care | 
              | ICPC-2-E use International Classification of Primary Care | 
              | ICSH (Interstitial Cell Stimulating Hormone) use Luteinizing Hormone | 
              | ICSH Receptors use Receptors, LH | 
              | ICSH, beta Subunit use Luteinizing Hormone, beta Subunit | 
              | ICSI use Sperm Injections, Intracytoplasmic | 
              | Ictalurid herpesvirus 1 use Ictalurivirus | 
              | Ictaluridae | 
              | Ictalurivirus | 
              | Ictalurus use Ictaluridae | 
              | Icterus use Jaundice | 
              | Ictodes foetida | 
              | Ictodes foetidus use Ictodes foetida | 
              | ICYP use Iodocyanopindolol | 
              | Id | 
              | Idaho | 
              | Idarubicin | 
              | Idazoxan | 
              | IDB use Inter-American Development Bank | 
              | IDDM use Diabetes Mellitus, Type 1 | 
              | Ideal Body Weight | 
              | Ideational Apraxia use Apraxias | 
              | Identification (Psychology) | 
              | Identification Code for Hazardous Materials | 
              | Identification, Social use Social Identification | 
              | Identity and Quality Pattern for Products and Services | 
              | Identity Crisis | 
              | Identity Theft | 
              | Ideomotor Apraxia use Apraxia, Ideomotor | 
              | Idiocy use Intellectual Disability | 
              | Idiomarina use Alteromonadaceae | 
              | Idiopathic CD4-Positive T-Lymphocytopenia use T-Lymphocytopenia, Idiopathic CD4-Positive | 
              | Idiopathic CNS Hypersomnolence use Hypersomnolence, Idiopathic | 
              | Idiopathic Environmental Intolerances use Multiple Chemical Sensitivity | 
              | Idiopathic Hypercatabolic Hypoproteinemia use Protein-Losing Enteropathies | 
              | Idiopathic Hypereosinophilic Syndrome use Hypereosinophilic Syndrome | 
              | Idiopathic Interstitial Pneumonias | 
              | Idiopathic Interstitial Pneumonitis - from Asbestos Exposure use Asbestosis | 
              | Idiopathic Intracranial Hypertension use Pseudotumor Cerebri | 
              | Idiopathic Myoclonic Epilepsy use Epilepsies, Myoclonic | 
              | Idiopathic Orofacial Dyskinesia use Meige Syndrome | 
              | Idiopathic Orthostatic Hypotension, Shy-Drager Type use Shy-Drager Syndrome | 
              | Idiopathic Parkinson Disease use Parkinson Disease | 
              | Idiopathic Pulmonary Fibrosis | 
              | Idiopathic Thrombocytopenic Purpura use Purpura, Thrombocytopenic, Idiopathic | 
              | Idiopathic Torsion Dystonia use Dystonia Musculorum Deformans | 
              | Idiopathic Upper Extremity Deep Vein Thrombosis use Upper Extremity Deep Vein Thrombosis | 
              | Idiosyncrasy | 
              | Idiotypes, Immunoglobulin use Immunoglobulin Idiotypes | 
              | Iditol Dehydrogenase use L-Iditol 2-Dehydrogenase | 
              | Idnoreovirus use Reoviridae | 
              | Idoxuridine | 
              | IDP use Inosine Diphosphate | 
              | IDRC use International Development Research Centre | 
              | Iduronate 2-Sulfatase Deficiency use Mucopolysaccharidosis II | 
              | Iduronate Sulfatase | 
              | Iduronate Sulfatase Deficiency use Mucopolysaccharidosis II | 
              | Iduronatesulfate Sulfohydrolase use Iduronate Sulfatase | 
              | Iduronic Acid | 
              | Iduronidase | 
              | IFN-gamma-Inducing Factor use Interleukin-18 | 
              | IFN-Stimulated Gene Factor 3 Complex use Interferon-Stimulated Gene Factor 3 | 
              | Ifosfamide | 
              | Ig Somatic Hypermutation use Somatic Hypermutation, Immunoglobulin | 
              | IgA use Immunoglobulin A | 
              | IgA Deficiency | 
              | IgA, Exocrine use Immunoglobulin A, Secretory | 
              | IgA, Secretory use Immunoglobulin A, Secretory | 
              | IgD use Immunoglobulin D | 
              | IgE use Immunoglobulin E | 
              | IgE Receptors use Receptors, IgE | 
              | IgE-Mediated Hypersensitivity use Hypersensitivity, Immediate | 
              | IGF Type 1 Receptor use Receptor, IGF Type 1 | 
              | IGF Type 2 Receptor use Receptor, IGF Type 2 | 
              | IGF-Binding Protein 1 use Insulin-Like Growth Factor Binding Protein 1 | 
              | IGF-Binding Protein 2 use Insulin-Like Growth Factor Binding Protein 2 | 
              | IGF-Binding Protein 3 use Insulin-Like Growth Factor Binding Protein 3 | 
              | IGF-Binding Protein 4 use Insulin-Like Growth Factor Binding Protein 4 | 
              | IGF-Binding Protein 5 use Insulin-Like Growth Factor Binding Protein 5 | 
              | IGF-Binding Protein 6 use Insulin-Like Growth Factor Binding Protein 6 | 
              | IGF-Binding Proteins use Insulin-Like Growth Factor Binding Proteins | 
              | IGF-I use Insulin-Like Growth Factor I | 
              | IGF-I Receptor use Receptor, IGF Type 1 | 
              | IGF-II use Insulin-Like Growth Factor II | 
              | IGF-II Receptor use Receptor, IGF Type 2 | 
              | IGFBP use Insulin-Like Growth Factor Binding Proteins | 
              | IGFBP-1 use Insulin-Like Growth Factor Binding Protein 1 | 
              | IGFBP-2 use Insulin-Like Growth Factor Binding Protein 2 | 
              | IGFBP-3 use Insulin-Like Growth Factor Binding Protein 3 | 
              | IGFBP-4 use Insulin-Like Growth Factor Binding Protein 4 | 
              | IGFBP-5 use Insulin-Like Growth Factor Binding Protein 5 | 
              | IGFBP-6 use Insulin-Like Growth Factor Binding Protein 6 | 
              | IgG use Immunoglobulin G | 
              | IgG Deficiency | 
              | IgG Receptors use Receptors, IgG | 
              | IgM use Immunoglobulin M | 
              | Ignatia amara | 
              | Ignicoccus use Desulfurococcaceae | 
              | Iguanas | 
              | IHHNV use Densovirinae | 
              | IHNV use Infectious hematopoietic necrosis virus | 
              | Ikaros Transcription Factor | 
              | IKe Phage use Bacteriophage IKe | 
              | Ikshugandha use Tribulus terrestris | 
              | IL-1 use Interleukin-1 | 
              | IL-1 alpha use Interleukin-1alpha | 
              | IL-1 beta use Interleukin-1beta | 
              | IL-1 beta-Converting Enzyme use Caspase 1 | 
              | IL-1 Receptors use Receptors, Interleukin-1 | 
              | IL-10 use Interleukin-10 | 
              | IL-11 use Interleukin-11 | 
              | IL-11 Receptors use Receptors, Interleukin-11 | 
              | IL-12 use Interleukin-12 | 
              | IL-12 Receptors use Receptors, Interleukin-12 | 
              | IL-13 use Interleukin-13 | 
              | IL-13 Receptors use Receptors, Interleukin-13 | 
              | IL-15 use Interleukin-15 | 
              | IL-15 Receptor use Receptors, Interleukin-15 | 
              | IL-16 use Interleukin-16 | 
              | Il-16 Receptors use Receptors, Interleukin-16 | 
              | IL-17 use Interleukin-17 | 
              | IL-17 Receptors use Receptors, Interleukin-17 | 
              | IL-18 use Interleukin-18 | 
              | IL-18 Receptors use Receptors, Interleukin-18 | 
              | IL-2 use Interleukin-2 | 
              | IL-2 Receptors use Receptors, Interleukin-2 | 
              | IL-21 Receptors use Receptors, Interleukin-21 | 
              | IL-23 use Interleukin-23 | 
              | IL-3 use Interleukin-3 | 
              | IL-3 Receptor beta Subunit use Cytokine Receptor Common beta Subunit | 
              | IL-3 Receptors use Receptors, Interleukin-3 | 
              | IL-4 use Interleukin-4 | 
              | IL-4 Receptors use Receptors, Interleukin-4 | 
              | IL-4 Receptors, Type I use Receptors, Interleukin-4, Type I | 
              | IL-4 Receptors, Type II use Receptors, Interleukin-4, Type II | 
              | IL-5 use Interleukin-5 | 
              | IL-5 Receptor beta Subunit use Cytokine Receptor Common beta Subunit | 
              | IL-5 Receptors use Receptors, Interleukin-5 | 
              | IL-6 use Interleukin-6 | 
              | IL-6 Receptors use Receptors, Interleukin-6 | 
              | IL-7 use Interleukin-7 | 
              | IL-7 Receptors use Receptors, Interleukin-7 | 
              | IL-8 use Interleukin-8 | 
              | IL-8 Receptors use Receptors, Interleukin-8 | 
              | IL-8A Receptors use Receptors, Interleukin-8A | 
              | IL-9 use Interleukin-9 | 
              | IL-9 Receptors use Receptors, Interleukin-9 | 
              | Ilarvirus | 
              | Ileal Conduit use Urinary Diversion | 
              | Ileal Diseases | 
              | Ileal Neoplasms | 
              | Ileal Pouches use Colonic Pouches | 
              | Ileal Reservoirs use Colonic Pouches | 
              | Ileitis | 
              | Ileitis, Regional use Crohn Disease | 
              | Ileitis, Terminal use Crohn Disease | 
              | Ileoanal Pouches use Colonic Pouches | 
              | Ileoanal Reservoirs use Colonic Pouches | 
              | Ileocecal Valve | 
              | Ileocolitis use Crohn Disease | 
              | Ileojejunal Bypass use Jejunoileal Bypass | 
              | Ileostomy | 
              | Iles Comores use Comoros | 
              | Ileum | 
              | Ileus | 
              | Ilex | 
              | Ilex aquifolium | 
              | Ilex casseine | 
              | Ilex cassine use Ilex casseine | 
              | Ilex guayusa | 
              | Ilex paraguariensis | 
              | Ilex vomitoria | 
              | Iliac Aneurysm | 
              | Iliac Artery | 
              | Iliac Vein | 
              | Iliac Vein Compression Syndrome use May-Thurner Syndrome | 
              | Iliocaval Compression Syndrome use May-Thurner Syndrome | 
              | Iliopsoas Abscess use Psoas Abscess | 
              | Iliotibial Band Syndrome | 
              | Ilium | 
              | Ilizarov Technique | 
              | Ill use Patients | 
              | Ill, Incurable use Incurable Patients | 
              | Illecebrum verticillatum | 
              | Illegal Immigration | 
              | Illegitimacy | 
              | Illex use Decapodiformes | 
              | Illicit Connections use Illicit Installations | 
              | Illicit Drug Testing use Substance Abuse Detection | 
              | Illicit Drugs use Street Drugs | 
              | Illicit Installations | 
              | Illicium | 
              | Illicium anisatum use Anisum stellatum | 
              | Illicium verum use Anisum stellatum | 
              | Illicum | 
              | Illinois | 
              | Illiteracy use Educational Status | 
              | Illness use Disease | 
              | Illness Behavior | 
              | Illness Days use Sick Leave | 
              | Illuminating Gas Poisoning use Carbon Monoxide Poisoning | 
              | Illumination use Lighting | 
              | Illusions | 
              | Illustrated Books use Books, Illustrated | 
              | Illustration, Medical use Medical Illustration | 
              | Iloprost | 
              | Iltovirus | 
              | Image Analysis, Computer-Assisted use Image Processing, Computer-Assisted | 
              | Image Cytometry | 
              | Image Enhancement | 
              | Image Interpretation, Computer-Assisted | 
              | Image Processing, Computer-Assisted | 
              | Image Reconstruction use Image Processing, Computer-Assisted | 
              | Image-Guided Biopsy | 
              | Image-Guided Surgery use Surgery, Computer-Assisted | 
              | Imagery (Psychotherapy) | 
              | Imagery, Guided use Imagery (Psychotherapy) | 
              | Imaginal Discs | 
              | Imagination | 
              | Imaging, Diagnostic use Diagnostic Imaging | 
              | Imaging, Medical use Diagnostic Imaging | 
              | Imaging, Three-Dimensional | 
              | Imaging, Three-Dimensional, Computer Assisted use Imaging, Three-Dimensional | 
              | Imbibition Methods | 
              | IMCI use Integrated Management of Childhood Illness | 
              | Imecromone use Hymecromone | 
              | Imhoff Tanks | 
              | Imidamine use Antazoline | 
              | Imidates use Imidoesters | 
              | Imidazoles | 
              | Imidazolidines | 
              | Imidazolidinethione use Ethylenethiourea | 
              | Imidazoline Receptors | 
              | Imidazoline-Guanidinium Receptors use Imidazoline Receptors | 
              | Imidazolines | 
              | Imides | 
              | Imidobenzyle use Imipramine | 
              | Imidocarb | 
              | Imidoesters | 
              | Imines | 
              | Imino Acids | 
              | Imino Furanoses | 
              | Imino Pyranoses | 
              | Imino Sugars | 
              | Imipemide use Imipenem | 
              | Imipenem | 
              | Imipramine | 
              | Imitative Behavior | 
              | Imizin use Imipramine | 
              | Immature B-Lymphocytes use Precursor Cells, B-Lymphoid | 
              | Immediate Dental Implant Loading | 
              | Immediate Recall use Memory, Short-Term | 
              | Immediate-Early Genes use Genes, Immediate-Early | 
              | Immediate-Early Proteins | 
              | Immersion | 
              | Immersion Foot | 
              | Immigrants use Emigrants and Immigrants | 
              | Immigration use Emigration and Immigration | 
              | Immobility Response, Tonic | 
              | Immobilization | 
              | Immobilization Reaction, Cataleptic use Freezing Reaction, Cataleptic | 
              | Immobilization, Tonic use Immobility Response, Tonic | 
              | Immobilized Antibodies use Antibodies, Immobilized | 
              | Immobilized Cells use Cells, Immobilized | 
              | Immobilized Enzymes use Enzymes, Immobilized | 
              | Immobilized Nucleic Acids | 
              | Immobilized Proteins | 
              | Immotile Cilia Syndrome use Ciliary Motility Disorders | 
              | Immune Adherence Reaction | 
              | Immune Complex use Antigen-Antibody Complex | 
              | Immune Complex Diseases | 
              | Immune Disorders use Immune System Diseases | 
              | Immune Disorders, Nervous System use Autoimmune Diseases of the Nervous System | 
              | Immune Escape, Tumor use Tumor Escape | 
              | Immune Evasion | 
              | Immune Evasion, Tumor use Tumor Escape | 
              | Immune Globulin, Rh use Rho(D) Immune Globulin | 
              | Immune Globulins use Immunoglobulins | 
              | Immune Monitoring use Monitoring, Immunologic | 
              | Immune Precipitates use Precipitins | 
              | Immune Reconstitution Disease use Immune Reconstitution Inflammatory Syndrome | 
              | Immune Reconstitution Inflammatory Syndrome | 
              | Immune Response Antigens use Histocompatibility Antigens Class II | 
              | Immune Response Genes use Genes, MHC Class II | 
              | Immune Response, Mucosal use Immunity, Mucosal | 
              | Immune Response-Associated Antigens, Human use HLA-D Antigens | 
              | Immune Restoration Syndrome use Immune Reconstitution Inflammatory Syndrome | 
              | Immune RNA Manipulation use Immunotherapy, Active | 
              | Immune Sera | 
              | Immune System | 
              | Immune System Diseases | 
              | Immune System Phenomena | 
              | Immune System Processes | 
              | Immune Tolerance | 
              | Immune-Associated Antigens use Histocompatibility Antigens Class II | 
              | Immune-Associated Antigens, Human use HLA-D Antigens | 
              | Immune-Response Antigens, Human use HLA-D Antigens | 
              | Immune-Response-Associated Antigens use Histocompatibility Antigens Class II | 
              | Immunity | 
              | Immunity, Active | 
              | Immunity, Cellular | 
              | Immunity, Herd | 
              | Immunity, Heterologous | 
              | Immunity, Humoral | 
              | Immunity, Innate | 
              | Immunity, Maternally-Acquired | 
              | Immunity, Mucosal | 
              | Immunity, Native use Immunity, Innate | 
              | Immunity, Natural use Immunity, Innate | 
              | Immunity, Non-Specific use Immunity, Innate | 
              | Immunization | 
              | Immunization Coverage | 
              | Immunization Programs | 
              | Immunization Schedule | 
              | Immunization Schedules use Immunization Schedule | 
              | Immunization, Active use Vaccination | 
              | Immunization, Booster use Immunization, Secondary | 
              | Immunization, Passive | 
              | Immunization, Secondary | 
              | Immunoactivators use Adjuvants, Immunologic | 
              | Immunoadhesins, CD4 use CD4 Immunoadhesins | 
              | Immunoadjuvants use Adjuvants, Immunologic | 
              | Immunoadsorbent Techniques use Immunosorbent Techniques | 
              | Immunoadsorbents use Immunosorbents | 
              | Immunoassay | 
              | Immunoassay, Enzyme use Immunoenzyme Techniques | 
              | Immunoassay, Fluorescence Polarization use Fluorescence Polarization Immunoassay | 
              | Immunoblastic Large-Cell Lymphoma use Lymphoma, Large-Cell, Immunoblastic | 
              | Immunoblastic Lymphadenopathy | 
              | Immunoblastic Lymphosarcoma, Diffuse use Lymphoma, Large-Cell, Immunoblastic | 
              | Immunoblastoma use Lymphoma, Large-Cell, Immunoblastic | 
              | Immunoblotting | 
              | Immunoblotting, Western use Blotting, Western | 
              | Immunochemistry | 
              | Immunochromatography | 
              | Immunocompatibility use Histocompatibility | 
              | Immunocompetence | 
              | Immunocompromised Host | 
              | Immunoconglutinins | 
              | Immunoconjugates | 
              | Immunocontraception use Contraception, Immunologic | 
              | Immunocytoadherence use Rosette Formation | 
              | Immunocytochemistry use Immunohistochemistry | 
              | Immunodeficiency Syndrome, Acquired use Acquired Immunodeficiency Syndrome | 
              | Immunodeficiency Virus, Bovine | 
              | Immunodeficiency Virus, Feline | 
              | Immunodeficiency Viruses, Primate use Lentiviruses, Primate | 
              | Immunodeficiency, Common Variable use Common Variable Immunodeficiency | 
              | Immunodeficiency, Severe Combined use Severe Combined Immunodeficiency | 
              | Immunodiagnosis use Immunologic Tests | 
              | Immunodiffusion | 
              | Immunodominant Epitopes | 
              | Immunoelectroblotting use Immunoblotting | 
              | Immunoelectron Microscopy use Microscopy, Immunoelectron | 
              | Immunoelectroosmophoresis use Counterimmunoelectrophoresis | 
              | Immunoelectrophoresis | 
              | Immunoelectrophoresis, Countercurrent use Counterimmunoelectrophoresis | 
              | Immunoelectrophoresis, Crossed use Immunoelectrophoresis, Two-Dimensional | 
              | Immunoelectrophoresis, Crossover use Counterimmunoelectrophoresis | 
              | Immunoelectrophoresis, Two-Dimensional | 
              | Immunoenzyme Techniques | 
              | Immunofluorescence Antibody Test, Direct use Fluorescent Antibody Technique, Direct | 
              | Immunofluorescence Antibody Test, Indirect use Fluorescent Antibody Technique, Indirect | 
              | Immunofluorescence Microscopy use Microscopy, Fluorescence | 
              | Immunofluorescence Technique use Fluorescent Antibody Technique | 
              | Immunofluorescence Technique, Direct use Fluorescent Antibody Technique, Direct | 
              | Immunofluorescence Technique, Indirect use Fluorescent Antibody Technique, Indirect | 
              | Immunofluorometric Assay use Fluoroimmunoassay | 
              | Immunogenetic Concepts use Immunogenetic Phenomena | 
              | Immunogenetic Phenomena | 
              | Immunogenetic Processes | 
              | Immunogenetics | 
              | Immunogens, Synthetic use Vaccines, Synthetic | 
              | Immunoglobulin A | 
              | Immunoglobulin A Nephropathy use Glomerulonephritis, IGA | 
              | Immunoglobulin A, Secretory | 
              | Immunoglobulin Allotypes | 
              | Immunoglobulin alpha-Chains | 
              | Immunoglobulin Class Switching | 
              | Immunoglobulin Constant Region use Immunoglobulin Constant Regions | 
              | Immunoglobulin Constant Regions | 
              | Immunoglobulin D | 
              | Immunoglobulin delta-Chains | 
              | Immunoglobulin E | 
              | Immunoglobulin Enhancer-Binding Protein use NF-kappa B | 
              | Immunoglobulin epsilon-Chains | 
              | Immunoglobulin Fab Fragments | 
              | Immunoglobulin Fc Fragments | 
              | Immunoglobulin Fragments | 
              | Immunoglobulin G | 
              | Immunoglobulin gamma-Chains | 
              | Immunoglobulin Genes use Genes, Immunoglobulin | 
              | Immunoglobulin Gm Allotypes | 
              | Immunoglobulin Heavy Chain Genes use Genes, Immunoglobulin Heavy Chain | 
              | Immunoglobulin Heavy Chains | 
              | Immunoglobulin Idiotypes | 
              | Immunoglobulin Inv Allotypes use Immunoglobulin Km Allotypes | 
              | Immunoglobulin Isotypes | 
              | Immunoglobulin J Recombination Signal Sequence-Binding Protein | 
              | Immunoglobulin J-Chains | 
              | Immunoglobulin Joining Region | 
              | Immunoglobulin kappa-Chains | 
              | Immunoglobulin Km Allotypes | 
              | Immunoglobulin lambda-Chains | 
              | Immunoglobulin Light Chains | 
              | Immunoglobulin Light Chains, Surrogate | 
              | Immunoglobulin M | 
              | Immunoglobulin mu-Chains | 
              | Immunoglobulin Recombinases use VDJ Recombinases | 
              | Immunoglobulin Somatic Hypermutation use Somatic Hypermutation, Immunoglobulin | 
              | Immunoglobulin Subunits | 
              | Immunoglobulin Switch Region | 
              | Immunoglobulin Therapy use Immunization, Passive | 
              | Immunoglobulin Variable Region | 
              | Immunoglobulin-Producing Cells use Antibody-Producing Cells | 
              | Immunoglobulin-Secreting Cells use Antibody-Producing Cells | 
              | Immunoglobulins | 
              | Immunoglobulins, alpha-Chain use Immunoglobulin alpha-Chains | 
              | Immunoglobulins, delta-Chain use Immunoglobulin delta-Chains | 
              | Immunoglobulins, epsilon-Chain use Immunoglobulin epsilon-Chains | 
              | Immunoglobulins, Fab Fragment use Immunoglobulin Fab Fragments | 
              | Immunoglobulins, gamma-Chain use Immunoglobulin gamma-Chains | 
              | Immunoglobulins, Heavy-Chain use Immunoglobulin Heavy Chains | 
              | Immunoglobulins, Intravenous | 
              | Immunoglobulins, kappa-Chain use Immunoglobulin kappa-Chains | 
              | Immunoglobulins, lambda-Chain use Immunoglobulin lambda-Chains | 
              | Immunoglobulins, Light-Chain use Immunoglobulin Light Chains | 
              | Immunoglobulins, mu-Chain use Immunoglobulin mu-Chains | 
              | Immunoglobulins, Oligoclonal use Oligoclonal Bands | 
              | Immunoglobulins, Thyroid-Stimulating | 
              | Immunogold Techniques use Immunohistochemistry | 
              | Immunogold-Silver Techniques use Immunohistochemistry | 
              | Immunohistochemistry | 
              | Immunohistocytochemistry use Immunohistochemistry | 
              | Immunolabeling Techniques use Immunohistochemistry | 
              | Immunologic Accessory Cells use Antigen-Presenting Cells | 
              | Immunologic Capping | 
              | Immunologic Competence use Immunocompetence | 
              | Immunologic Deficiency Syndrome, Acquired use Acquired Immunodeficiency Syndrome | 
              | Immunologic Deficiency Syndromes | 
              | Immunologic Diseases use Immune System Diseases | 
              | Immunologic Enhancement of Grafts use Graft Enhancement, Immunologic | 
              | Immunologic Factors | 
              | Immunologic Markers use Biological Markers | 
              | Immunologic Memory | 
              | Immunologic Monitoring use Monitoring, Immunologic | 
              | Immunologic Receptors use Receptors, Immunologic | 
              | Immunologic Stimulation use Immunization | 
              | Immunologic Suppressor Factors use Suppressor Factors, Immunologic | 
              | Immunologic Surveillance | 
              | Immunologic Techniques | 
              | Immunologic Tests | 
              | Immunological Models use Models, Immunological | 
              | Immunological Synapses | 
              | Immunology use Allergy and Immunology | 
              | Immunology, Transplantation use Transplantation Immunology | 
              | Immunomagnetic Bead Technique use Immunomagnetic Separation | 
              | Immunomagnetic Purging use Immunomagnetic Separation | 
              | Immunomagnetic Separation | 
              | Immunomodulation | 
              | Immunomodulators use Immunologic Factors | 
              | Immunoperoxidase Techniques use Immunoenzyme Techniques | 
              | Immunophenotyping | 
              | Immunophilins | 
              | Immunopotentiators use Adjuvants, Immunologic | 
              | Immunoprecipitation | 
              | Immunoprecipitation, Chromatin use Chromatin Immunoprecipitation | 
              | Immunoproliferative Disorders | 
              | Immunoproliferative Small Intestinal Disease | 
              | Immunoproteins | 
              | Immunoradiometric Assay | 
              | Immunoreceptor Tyrosine-Based Activation Motif | 
              | Immunoreceptor Tyrosine-Based Inhibition Motif | 
              | Immunoscintigraphy, Radiolabeled use Radioimmunodetection | 
              | Immunosorbent Techniques | 
              | Immunosorbents | 
              | Immunostimulants use Adjuvants, Immunologic | 
              | Immunostimulating Complexes use ISCOMs | 
              | Immunostimulation use Immunization | 
              | Immunosuppressed Host use Immunocompromised Host | 
              | Immunosuppression | 
              | Immunosuppression (Physiology) use Immune Tolerance | 
              | Immunosuppressive Agents | 
              | Immunosurveillance use Monitoring, Immunologic | 
              | Immunotherapy | 
              | Immunotherapy, Active | 
              | Immunotherapy, Adoptive | 
              | Immunotherapy, Allergen use Desensitization, Immunologic | 
              | Immunotherapy, Passive use Immunization, Passive | 
              | Immunotoxins | 
              | IMP use Inosine Monophosphate | 
              | IMP Dehydrogenase | 
              | IMP Nucleotidase use 5'-Nucleotidase | 
              | IMP Phosphatase use 5'-Nucleotidase | 
              | IMP Pyrophosphorylase use Hypoxanthine Phosphoribosyltransferase | 
              | Impact Assessment use Environmental Impact | 
              | Impact Evaluation use Environmental Impact | 
              | Impact Factor | 
              | Impact in the Health Condition use Health Evaluation | 
              | Impact of Disasters | 
              | Impact Production | 
              | Impact Seizure use Epilepsy, Post-Traumatic | 
              | Impacts on Health | 
              | Impatiens | 
              | Impatiens necrotic spot virus use Tospovirus | 
              | Impedance use Electric Impedance | 
              | Impedance Tests, Acoustic use Acoustic Impedance Tests | 
              | Impedance, Transthoracic use Cardiography, Impedance | 
              | Imperata use Poaceae | 
              | Imperatoria use Imperatoria ostruthium | 
              | Imperatoria ostruthium | 
              | Impervious Lining | 
              | Impervious Soils | 
              | Impetigo | 
              | Impetigo Contagiosa use Impetigo | 
              | Impila use Callilepis | 
              | Implant Capsular Contracture | 
              | Implant Radiotherapy use Brachytherapy | 
              | Implant, Middle Ear use Ossicular Prosthesis | 
              | Implant-Supported Dental Prosthesis use Dental Prosthesis, Implant-Supported | 
              | Implantable Cardioverter-Defibrillators use Defibrillators, Implantable | 
              | Implantable Catheters use Catheters, Indwelling | 
              | Implantable Defibrillators use Defibrillators, Implantable | 
              | Implantable Infusion Pumps use Infusion Pumps, Implantable | 
              | Implantable Neurostimulators | 
              | Implantation, Blastocyst use Embryo Implantation | 
              | Implantation, Ovum, Delayed use Embryo Implantation, Delayed | 
              | Implants, Absorbable use Absorbable Implants | 
              | Implants, Artificial use Prostheses and Implants | 
              | Implants, Breast use Breast Implants | 
              | Implants, Cochlear use Cochlear Implants | 
              | Implants, Dental use Dental Implants | 
              | Implants, Experimental | 
              | Implants, Molteno use Molteno Implants | 
              | Implosive Therapy | 
              | Importation of Products | 
              | Imported Products use Importation of Products | 
              | Importins use Karyopherins | 
              | Impotence use Erectile Dysfunction | 
              | Impotence, Arteriogenic use Impotence, Vasculogenic | 
              | Impotence, Vasculogenic | 
              | Impotence, Venogenic use Impotence, Vasculogenic | 
              | Impounding Discharge | 
              | Impoundings | 
              | Imprinting (Psychology) | 
              | Impromidine | 
              | Imprudence | 
              | Impulse Control Disorders | 
              | Impulse-Ridden Personality use Personality Disorders | 
              | Impulsive Behavior | 
              | Impulsive Petit Mal, Janz use Myoclonic Epilepsy, Juvenile | 
              | Imputability | 
              | In Situ Disposal | 
              | In Situ Hybridization | 
              | In Situ Hybridization, Fluorescence | 
              | In Situ Labeling, Primed use Primed In Situ Labeling | 
              | In Situ Nick-End Labeling | 
              | In Vitro as Topic use In Vitro Techniques | 
              | In Vitro Assays in Homeopathy use Basic Homeopathic Research | 
              | In Vitro Oocyte Maturation use In Vitro Oocyte Maturation Techniques | 
              | In Vitro Oocyte Maturation Techniques | 
              | In Vitro Research in Homeopathy use Basic Homeopathic Research | 
              | In Vitro Techniques | 
              | In Vivo NMR Spectroscopy use Magnetic Resonance Spectroscopy | 
              | In-Hospital Mortality use Hospital Mortality | 
              | Inactivation, Metabolic | 
              | Inactive Population | 
              | Inadequate Personality use Personality Disorders | 
              | Inappropriate ACTH Secretion Syndrome use Pituitary ACTH Hypersecretion | 
              | Inappropriate ADH Syndrome | 
              | Inappropriate Adrenocorticotropic Hormone Secretion use Pituitary ACTH Hypersecretion | 
              | Inappropriate Follicle Stimulating Hormone Secretion use Hyperpituitarism | 
              | Inappropriate FSH Secretion Syndrome use Hyperpituitarism | 
              | Inappropriate Growth Hormone Secretion Syndrome (Acromegaly) use Acromegaly | 
              | Inappropriate LH Secretion Syndrome use Hyperpituitarism | 
              | Inappropriate Luteinizing Hormone Secretion use Hyperpituitarism | 
              | Inappropriate Prescribing | 
              | Inappropriate Prescriptions use Inappropriate Prescribing | 
              | Inappropriate Thyroid Stimulating Hormone Secretion use Hyperpituitarism | 
              | Inappropriate TSH Secretion Syndrome use Hyperpituitarism | 
              | Inappropriate Vasopressin Secretion Syndrome use Inappropriate ADH Syndrome | 
              | Inborn Errors of Metabolism use Metabolism, Inborn Errors | 
              | Inborn Errors of Metabolism, Brain use Brain Diseases, Metabolic, Inborn | 
              | Inborn Urea Cycle Disorder use Urea Cycle Disorders, Inborn | 
              | Inbreeding | 
              | Inbreeding, Human use Consanguinity | 
              | Incandescence | 
              | INCAP use Food and Nutrition Foundation of Central America and Panama | 
              | Incense Plant use Humea elegans | 
              | Incentive Plans, Employee use Employee Incentive Plans | 
              | Incentive Plans, Physician use Physician Incentive Plans | 
              | Incentive Reimbursement use Reimbursement, Incentive | 
              | Incentives use Motivation | 
              | Incentives for Private Investment on Research and Development | 
              | Incest | 
              | Incidence | 
              | Incidence Rate use Incidence | 
              | Incidence Studies use Cohort Studies | 
              | Incident Reporting, Hospital use Risk Management | 
              | Incidental Findings | 
              | Incineration | 
              | Incinerators | 
              | Incipient Schizophrenia use Schizotypal Personality Disorder | 
              | Incisive Papilla use Palate | 
              | Incisor | 
              | Inclusion Bodies | 
              | Inclusion Bodies, Intranuclear use Intranuclear Inclusion Bodies | 
              | Inclusion Bodies, Viral | 
              | Inclusion Body Myositis use Myositis, Inclusion Body | 
              | Inclusion Disease use Cytomegalovirus Infections | 
              | Income | 
              | Income Tax | 
              | Incompatible Drugs use Drug Incompatibility | 
              | Incompatible Waste | 
              | Incompetency, Mental use Mental Competency | 
              | Incomplete Viruses use Defective Viruses | 
              | Incontinence Pads | 
              | Incontinentia Pigmenti | 
              | Incontinentia Pigmenti Achromians use Pigmentation Disorders | 
              | Incoordination use Ataxia | 
              | Increased Gravity use Hypergravity | 
              | Increasing Dynamization use Progressive Scale | 
              | Increasing Scale use Progressive Scale | 
              | Incretins | 
              | Incrustant Water use Water Hardness | 
              | Incubators | 
              | Incubators, Infant | 
              | Incunabula | 
              | Incunabula as Topic | 
              | Incurable Patients | 
              | Incus | 
              | Indans | 
              | Indantrione Monohydrate use Ninhydrin | 
              | Indapamide | 
              | Indazoles | 
              | INDEL Mutation | 
              | Indenes | 
              | Independent Living | 
              | Independent Practice Associations | 
              | Independent State of Samoa | 
              | Indeterminate Tuberculoid use Leprosy, Paucibacillary | 
              | Index Medicus use MEDLINE | 
              | Index of Orthodontic Treatment Need | 
              | Indexes | 
              | Indexes as Topic use Abstracting and Indexing as Topic | 
              | Indexing as Topic use Abstracting and Indexing as Topic | 
              | India | 
              | India Aconite use Aconitum ferox | 
              | India's Aconite use Aconitum ferox | 
              | India's Aconitum use Aconitum ferox | 
              | India's Cashew use Anacardium orientale | 
              | India's Chestnut use Aesculus | 
              | Indian Berries use Cocculus indicus | 
              | Indian Corn use Zea mays | 
              | Indian Cress use Tropaeolum majus | 
              | Indian Devil Tree use Alstonia scholaris | 
              | Indian Doab use Cynodon dactylon | 
              | Indian Fig Opuntia use Opuntia ficus | 
              | Indian Finger Millet use Eleusine | 
              | Indian Health Service (U.S.) use United States Indian Health Service | 
              | Indian Hellebore use Veratrum viride | 
              | Indian Kino Tree use Pterocarpus | 
              | Indian Laburnum use Cassia | 
              | Indian Licorice use Abrus | 
              | Indian Nettle use Acalypha indica | 
              | Indian Nightshade use Solanum arrebenta | 
              | Indian Ocean | 
              | Indian Ocean Islands | 
              | Indian Pea use Cicer arietinum | 
              | Indian Pennywort use Hydrocotyle asiatica (Homeopathy) | 
              | Indian Pink use Spigelia marylandica | 
              | Indian Poke use Veratrum viride | 
              | Indian Posy use Asclepias tuberosa | 
              | Indian Tobacco use Lobelia inflata | 
              | Indiana | 
              | Indians, Central American | 
              | Indians, North American | 
              | Indians, South American | 
              | Indican | 
              | Indicator Dilution Techniques | 
              | Indicators | 
              | Indicators and Reagents | 
              | Indicators of Health Services | 
              | Indicators of Morbidity and Mortality | 
              | Indicators of Quality of Life | 
              | Indigency use Poverty | 
              | Indigency, Medical use Medical Indigency | 
              | Indigenous Communities use Indigenous Population | 
              | Indigenous Farmers use Indigenous Population | 
              | Indigenous Health use Health of Indigenous Peoples | 
              | Indigenous Organizations | 
              | Indigenous Population | 
              | Indigenous' Health use Health of Indigenous Peoples | 
              | Indigent Care use Uncompensated Care | 
              | Indigestion use Dyspepsia | 
              | Indigo Carmine | 
              | Indigo tinctoria | 
              | Indigo-Dye-Stuff use Indigo tinctoria | 
              | Indigofera | 
              | Indigofera indica use Indigo tinctoria | 
              | Indigofera tinctoria use Indigo tinctoria | 
              | Indigotindisulfonate Sodium use Indigo Carmine | 
              | Indinavir | 
              | Indirect Parameters | 
              | Indispositions | 
              | Indium | 
              | Indium Metallicum | 
              | Indium Radioisotopes | 
              | Individual Differences use Individuality | 
              | Individual Diseases | 
              | Individual Health Care Services use Health Services | 
              | Individual Illnesses use Individual Diseases | 
              | Individual Practice Associations use Independent Practice Associations | 
              | Individuality | 
              | Individualized Medicine | 
              | Individuation | 
              | Indocyanine Green | 
              | Indole Alkaloids | 
              | Indole-3-Glycerol-Phosphate Synthase | 
              | Indoleacetic Acids | 
              | Indoleamine-Pyrrole 2,3,-Dioxygenase | 
              | Indolequinones | 
              | Indoles | 
              | Indolizidines | 
              | Indolizines | 
              | Indolum | 
              | Indolylethylamines use Tryptamines | 
              | Indomethacin | 
              | Indonesia | 
              | Indonesian New Guinea use Indonesia | 
              | Indoor Air | 
              | Indoor Air Pollution use Air Pollution, Indoor | 
              | Indoor Air Quality use Air Pollution, Indoor | 
              | Indophenol | 
              | Indoprofen | 
              | Indoramin | 
              | Indri use Strepsirhini | 
              | Indriidae use Strepsirhini | 
              | Induced Pluripotent Stem Cells | 
              | Induced Seismicity | 
              | Inducer Cells use T-Lymphocytes, Helper-Inducer | 
              | Inducible T-Cell Co-Stimulator Ligand | 
              | Inducible T-Cell Co-Stimulator Protein | 
              | Induction Chemotherapy | 
              | Industrial Areas use Industrial Zones | 
              | Industrial Arts use Technology | 
              | Industrial Chimneys | 
              | Industrial Dentistry use Occupational Dentistry | 
              | Industrial Development use Industrialization (Environmental Health) | 
              | Industrial Disaster | 
              | Industrial Effluent Treatment | 
              | Industrial Effluents | 
              | Industrial Effluents Disposal | 
              | Industrial Equipment use Plant Equipment | 
              | Industrial Expansion use Industrialization (Environmental Health) | 
              | Industrial Feeding use Collective Feeding | 
              | Industrial Fires | 
              | Industrial Fumes use Industrial Pollutants | 
              | Industrial Health use Occupational Health | 
              | Industrial Hygiene use Occupational Health | 
              | Industrial Medicine use Occupational Medicine | 
              | Industrial Microbiology | 
              | Industrial Nursing use Occupational Health Nursing | 
              | Industrial Oils | 
              | Industrial Parks use Industrial Zones | 
              | Industrial Pollutants | 
              | Industrial Pollution | 
              | Industrial Progress use Industrialization (Environmental Health) | 
              | Industrial Projects | 
              | Industrial Safety | 
              | Industrial Sanitation | 
              | Industrial Settlements use Industrial Zones | 
              | Industrial Sludges | 
              | Industrial Sources use Industrial Pollutants | 
              | Industrial Waste | 
              | Industrial Wastewater use Industrial Effluents | 
              | Industrial Water | 
              | Industrial Water Consumption | 
              | Industrial Zones | 
              | Industrialization use Industry | 
              | Industrialization (Environmental Health) | 
              | Industrialized Countries use Developed Countries | 
              | Industrialized Foods | 
              | Industry | 
              | Industry Safety use Industrial Safety | 
              | Inequalities in Health use Health Inequalities | 
              | Inequality in Health use Health Inequalities | 
              | Inequities in Health use Health Inequalities | 
              | Inequity use Social Inequity | 
              | Inert Gas Narcosis | 
              | Inertia | 
              | Infant | 
              | Infant Behavior | 
              | Infant Care | 
              | Infant Death | 
              | Infant Development use Child Development | 
              | Infant Equipment | 
              | Infant Food | 
              | Infant Formula | 
              | Infant Furniture use Infant Equipment | 
              | Infant Health use Infant Welfare | 
              | Infant Health Services use Child Health Services | 
              | Infant Malnutrition use Infant Nutrition Disorders | 
              | Infant Mortality | 
              | Infant Mortality by Specific Risk use Infant Mortality | 
              | Infant Mortality Rate use Infant Mortality | 
              | Infant Mortality, Late use Infant Mortality | 
              | Infant Nutrition | 
              | Infant Nutrition Disorders | 
              | Infant Nutrition Physiology use Infant Nutritional Physiological Phenomena | 
              | Infant Nutritional Physiological Phenomena | 
              | Infant Psychology use Psychology, Child | 
              | Infant Radiant Warmers use Incubators, Infant | 
              | Infant Strollers use Infant Equipment | 
              | Infant Swings use Infant Equipment | 
              | Infant Walkers use Infant Equipment | 
              | Infant Welfare | 
              | Infant, Extremely Low Birth Weight | 
              | Infant, Extremely Premature | 
              | Infant, Low Birth Weight | 
              | Infant, Newborn | 
              | Infant, Newborn, Diseases | 
              | Infant, Newborn, Intensive Care use Intensive Care, Neonatal | 
              | Infant, Newborn, Screening use Neonatal Screening | 
              | Infant, Postmature | 
              | Infant, Premature | 
              | Infant, Premature, Diseases | 
              | Infant, Small for Gestational Age | 
              | Infant, Very Low Birth Weight | 
              | Infanticide | 
              | Infantile Apparent Life-Threatening Event | 
              | Infantile Cortical Hyperostosis use Hyperostosis, Cortical, Congenital | 
              | Infantile Onset Multisystem Inflammatory Disease use Cryopyrin-Associated Periodic Syndromes | 
              | Infantile Papular Acrodermatitis use Acrodermatitis | 
              | Infantile Paralysis use Poliomyelitis | 
              | Infantile Refsum Disease use Refsum Disease, Infantile | 
              | Infantile Sialic Acid Storage Disease use Sialic Acid Storage Disease | 
              | Infantile Spasms use Spasms, Infantile | 
              | Infantile Spinal Muscular Atrophy use Spinal Muscular Atrophies of Childhood | 
              | Infarction | 
              | Infarction, Anterior Cerebral Artery | 
              | Infarction, Cerebral use Cerebral Infarction | 
              | Infarction, Lacunar use Stroke, Lacunar | 
              | Infarction, Middle Cerebral Artery | 
              | Infarction, Posterior Cerebral Artery | 
              | Infection | 
              | Infection Control | 
              | Infection Control Practitioners | 
              | Infection Control Services, Hospital | 
              | Infection Control, Dental | 
              | Infections, Cardiovascular use Cardiovascular Infections | 
              | Infectious Anemia Virus, Equine | 
              | Infectious Arteritis Virus, Equine use Arteritis Virus, Equine | 
              | Infectious Bovine Rhinotracheitis | 
              | Infectious Bovine Rhinotracheitis Virus use Herpesvirus 1, Bovine | 
              | Infectious bronchitis virus | 
              | Infectious Bursal Agent use Infectious bursal disease virus | 
              | Infectious bursal disease virus | 
              | Infectious Disease Contact Tracing use Contact Tracing | 
              | Infectious Disease Incubation Period | 
              | Infectious Disease Medicine | 
              | Infectious Disease Reporting use Disease Notification | 
              | Infectious Disease Transmission, Patient-to-Professional | 
              | Infectious Disease Transmission, Professional-to-Patient | 
              | Infectious Disease Transmission, Vertical | 
              | Infectious Diseases use Communicable Diseases | 
              | Infectious Diseases Specialty use Infectious Disease Medicine | 
              | Infectious Diseases, Emerging use Communicable Diseases, Emerging | 
              | Infectious Encephalomyelitis, Viral use Encephalitis, Viral | 
              | Infectious Enteritis Virus of Mink use Mink enteritis virus | 
              | Infectious Enteritis Virus, Feline use Feline panleukopenia virus | 
              | Infectious hematopoietic necrosis virus | 
              | Infectious hypodermal and hematopoietic necrosis virus use Densovirinae | 
              | Infectious Keratoconjunctivitis use Keratoconjunctivitis, Infectious | 
              | Infectious Mononucleosis | 
              | Infectious Mononucleosis Virus use Herpesvirus 4, Human | 
              | Infectious Mononucleosis-Like Syndrome, Chronic use Fatigue Syndrome, Chronic | 
              | Infectious pancreatic necrosis virus | 
              | Infectious Peritonitis Virus, Feline use Coronavirus, Feline | 
              | Infectious Pustular Vulvovaginitis Virus use Herpesvirus 1, Bovine | 
              | Infectious salmon anemia virus use Isavirus | 
              | Infectology use Infectious Disease Medicine | 
              | Inferior Colliculi | 
              | Inferior Myocardial Infarction use Inferior Wall Myocardial Infarction | 
              | Inferior Petrosal Sinus Sampling use Petrosal Sinus Sampling | 
              | Inferior Pulvinar Nucleus use Pulvinar | 
              | Inferior Vena Cava Filters use Vena Cava Filters | 
              | Inferior Wall Myocardial Infarction | 
              | Infertility | 
              | Infertility Agents use Fertility Agents | 
              | Infertility Agents, Female use Fertility Agents, Female | 
              | Infertility, Female | 
              | Infertility, Male | 
              | Infertility, Plant use Plant Infertility | 
              | Infibulation use Circumcision, Female | 
              | Infiltration Ditch use Infiltration-Percolation Ditches | 
              | Infiltration Ditches use Infiltration-Percolation Ditches | 
              | Infiltration Galleries | 
              | Infiltration-Percolation Ditches | 
              | Infinitesimal Dose use Small Doses | 
              | Inflammable Wastes | 
              | Inflammasomes | 
              | Inflammation | 
              | Inflammation Mediators | 
              | Inflammation, Brain use Encephalitis | 
              | Inflammation, Endodontic use Pulpitis | 
              | Inflammation, Perinephrium use Perinephritis | 
              | Inflammatory Bowel Diseases | 
              | Inflammatory Breast Cancer use Inflammatory Breast Neoplasms | 
              | Inflammatory Breast Neoplasms | 
              | Inflammatory Myopathy use Myositis | 
              | Inflammatory Pseudotumor of Lung use Plasma Cell Granuloma, Pulmonary | 
              | Inflammatory Pseudotumor, Orbital use Orbital Pseudotumor | 
              | Inflammatory Response Syndrome, Systemic use Systemic Inflammatory Response Syndrome | 
              | Inflation, Economic | 
              | Inflorescence | 
              | Influence of Aliments use Modalities, Alimentary | 
              | Influenza A virus | 
              | Influenza A Virus, H10N7 Subtype | 
              | Influenza A Virus, H10N8 Subtype | 
              | Influenza A Virus, H1N1 Subtype | 
              | Influenza A Virus, H1N2 Subtype | 
              | Influenza A Virus, H2N2 Subtype | 
              | Influenza A Virus, H3N2 Subtype | 
              | Influenza A Virus, H3N8 Subtype | 
              | Influenza A Virus, H5N1 Subtype | 
              | Influenza A Virus, H5N2 Subtype | 
              | Influenza A Virus, H7N1 Subtype | 
              | Influenza A Virus, H7N2 Subtype | 
              | Influenza A Virus, H7N3 Subtype | 
              | Influenza A Virus, H7N7 Subtype | 
              | Influenza A Virus, H7N9 Subtype | 
              | Influenza A Virus, H9N2 Subtype | 
              | Influenza B virus | 
              | Influenza C Virus use Influenzavirus C | 
              | Influenza D Virus use Thogotovirus | 
              | Influenza in Birds | 
              | Influenza in Humans use Influenza, Human | 
              | Influenza Pandemic, 1918-1919 | 
              | Influenza Vaccines | 
              | Influenza Viruses use Orthomyxoviridae | 
              | Influenza Viruses Type A use Influenza A virus | 
              | Influenza Viruses Type B use Influenza B virus | 
              | Influenza Viruses Type C use Influenzavirus C | 
              | Influenza Viruses Type D use Thogotovirus | 
              | Influenza, Avian use Influenza in Birds | 
              | Influenza, Human | 
              | Influenzavirus A | 
              | Influenzavirus B | 
              | Influenzavirus C | 
              | Influenzavirus D use Thogotovirus | 
              | Influenzinum | 
              | Informatics | 
              | Information | 
              | Information and Communication in Health use Health Communication | 
              | Information Centers | 
              | Information Disclosure use Disclosure | 
              | Information Display use Data Display | 
              | Information Dissemination | 
              | Information Exchange | 
              | Information Literacy | 
              | Information Management | 
              | Information Processing, Automatic use Automatic Data Processing | 
              | Information Processing, Human use Mental Processes | 
              | Information Products and Services | 
              | Information Retrieval use Information Storage and Retrieval | 
              | Information Retrieval Systems use Information Systems | 
              | Information Science | 
              | Information Seeking Behavior | 
              | Information Services | 
              | Information Society Indicators | 
              | Information Storage and Retrieval | 
              | Information Systems | 
              | Information Technologies and Communication Projects | 
              | Information Technology | 
              | Information Theory | 
              | Informed Consent | 
              | Informed Consent By Minors | 
              | Informed Consent Forms use Consent Forms | 
              | Infrared Rays | 
              | Infrared Spectrophotometry use Spectrophotometry, Infrared | 
              | Infrastructure | 
              | Infrastructure Projects | 
              | Infratentorial Neoplasms | 
              | Infratentorial Tumors use Infratentorial Neoplasms | 
              | Infundibular Nucleus use Arcuate Nucleus of Hypothalamus | 
              | Infundibular Stalk use Pituitary Gland | 
              | Infundibular Stem use Pituitary Gland | 
              | Infundibular Stenosis, Pulmonary use Pulmonary Subvalvular Stenosis | 
              | Infundibulum (Hypophysis) use Pituitary Gland | 
              | Infundibulum, Hypophyseal use Pituitary Gland | 
              | Infusion Pumps | 
              | Infusion Pumps, External use Infusion Pumps | 
              | Infusion Pumps, Implantable | 
              | Infusion Therapy, Home use Home Infusion Therapy | 
              | Infusions, Intra-Arterial | 
              | Infusions, Intra-Osseous use Infusions, Intraosseous | 
              | Infusions, Intralesional | 
              | Infusions, Intraosseous | 
              | Infusions, Intravenous | 
              | Infusions, Intraventricular | 
              | Infusions, Parenteral | 
              | Infusions, Regional Arterial use Infusions, Intra-Arterial | 
              | Infusions, Spinal | 
              | Infusions, Subcutaneous | 
              | Infusorial Earth use Diatomaceous Earth | 
              | Infusors use Infusion Pumps | 
              | Inguinal Canal | 
              | Inguinal Hernia use Hernia, Inguinal | 
              | Inhalant Abuse | 
              | Inhalation | 
              | Inhalation Anesthetics use Anesthetics, Inhalation | 
              | Inhalation Burns use Burns, Inhalation | 
              | Inhalation Devices use Nebulizers and Vaporizers | 
              | Inhalation Drug Administration use Administration, Inhalation | 
              | Inhalation Exposure | 
              | Inhalation Injury, Smoke use Smoke Inhalation Injury | 
              | Inhalation of Drugs use Administration, Inhalation | 
              | Inhalation Provocation Tests use Bronchial Provocation Tests | 
              | Inhalation Spacers | 
              | Inhalation Therapy use Respiratory Therapy | 
              | Inhalators use Nebulizers and Vaporizers | 
              | Inhalers use Nebulizers and Vaporizers | 
              | Inhalers, Metered Dose use Metered Dose Inhalers | 
              | Inhaling use Inhalation | 
              | Inheritance Patterns | 
              | Inherited Coagulation Disorders use Blood Coagulation Disorders, Inherited | 
              | Inhibin-beta Subunits | 
              | Inhibins | 
              | Inhibition (Psychology) | 
              | Inhibition, Neural use Neural Inhibition | 
              | Inhibitor of Apoptosis Proteins | 
              | Inhibitor of Differentiation Protein 1 | 
              | Inhibitor of Differentiation Protein 2 | 
              | Inhibitor of Differentiation Proteins | 
              | Inhibitory Concentration 50 | 
              | Inhibitory Postsynaptic Potentials | 
              | Inhibitory Smad Proteins use Smad Proteins, Inhibitory | 
              | Inia geoffrensis geoffrensis use Delphinus amazonicus | 
              | Initial Reconstruction and Return to Normality | 
              | Initiation Factors use Peptide Initiation Factors | 
              | Initiator Codon use Codon, Initiator | 
              | Initiator tRNA use RNA, Transfer, Met | 
              | Injections | 
              | Injections, Endolymphatic use Injections, Intralymphatic | 
              | Injections, Epidural | 
              | Injections, Intra-Arterial | 
              | Injections, Intra-Articular | 
              | Injections, Intradermal | 
              | Injections, Intralesional | 
              | Injections, Intralymphatic | 
              | Injections, Intramuscular | 
              | Injections, Intraocular | 
              | Injections, Intraperitoneal | 
              | Injections, Intraspinal use Injections, Spinal | 
              | Injections, Intrathecal use Injections, Spinal | 
              | Injections, Intravenous | 
              | Injections, Intraventricular | 
              | Injections, Jet | 
              | Injections, Sclerosing use Sclerosing Solutions | 
              | Injections, Sperm, Intracytoplasmic use Sperm Injections, Intracytoplasmic | 
              | Injections, Spinal | 
              | Injections, Subcutaneous | 
              | Injuries use Wounds and Injuries | 
              | Injuries, Multiple use Multiple Trauma | 
              | Injuries, Nonpenetrating use Wounds, Nonpenetrating | 
              | Injury Severity Score | 
              | Ink | 
              | Ink Blot Tests | 
              | INK4 Cyclin-Dependent Kinase Inhibitors use Cyclin-Dependent Kinase Inhibitor Proteins | 
              | Inlay Casting Wax | 
              | Inlays | 
              | Inlets use Bays | 
              | INN use International Nonproprietary Names for Pharmaceutical Substances | 
              | Innate Behavior use Instinct | 
              | Inner Cell Mass, Blastocyst use Blastocyst Inner Cell Mass | 
              | Inner Ear Disease use Labyrinth Diseases | 
              | Inner Mongolia use China | 
              | Innominate Artery use Brachiocephalic Trunk | 
              | Innominate Veins use Brachiocephalic Veins | 
              | Innovation | 
              | Innovation and Development Policy | 
              | Innovation Diffusion use Diffusion of Innovation | 
              | Innovator Drugs use Reference Drugs | 
              | Inoculation Lymphoreticulosis use Cat-Scratch Disease | 
              | Inorganic Acids | 
              | Inorganic Carbon Compounds use Carbon Compounds, Inorganic | 
              | Inorganic Chemicals | 
              | Inorganic Chemistry use Chemistry, Inorganic | 
              | Inorganic Particles | 
              | Inorganic Pollutants | 
              | Inorganic Pollutants in Foods use Food Pollutants, Inorganic | 
              | Inorganic Pyrophosphatase | 
              | Inorganic Substances use Inorganic Chemicals | 
              | Inorganic Tracers | 
              | Inosinate Phosphatase use 5'-Nucleotidase | 
              | Inosine | 
              | Inosine Cyclic 3',5'-Monophosphate use Cyclic IMP | 
              | Inosine Diphosphate | 
              | Inosine Monophosphate | 
              | Inosine Nucleotides | 
              | Inosine Phosphates use Inosine Nucleotides | 
              | Inosine Phosphorylase use Purine-Nucleoside Phosphorylase | 
              | Inosine Polynucleotides use Poly I | 
              | Inosine Pranobex | 
              | Inosine Triphosphate | 
              | Inosinic Acid use Inosine Monophosphate | 
              | Inosinic Acid Dehydrogenase use IMP Dehydrogenase | 
              | Inosiplex use Inosine Pranobex | 
              | Inositol | 
              | Inositol 1,2-Cyclic Phosphate 2-Phosphohydrolase use Glycerophosphoinositol Inositolphosphodiesterase | 
              | Inositol 1,4,5-Triphosphate use Inositol 1,4,5-Trisphosphate | 
              | Inositol 1,4,5-Triphosphate Receptors use Inositol 1,4,5-Trisphosphate Receptors | 
              | Inositol 1,4,5-Trisphosphate | 
              | Inositol 1,4,5-Trisphosphate Receptors | 
              | Inositol Cyclase use Myo-Inositol-1-Phosphate Synthase | 
              | Inositol Hexaphosphate use Phytic Acid | 
              | Inositol Oxygenase | 
              | Inositol Phosphates | 
              | Inositol Phosphoglycerides use Phosphatidylinositols | 
              | Inositol-1-Phosphate Synthase use Myo-Inositol-1-Phosphate Synthase | 
              | Inotropic Agents, Positive Cardiac use Cardiotonic Agents | 
              | Inotropism use Muscle Contraction | 
              | Inotropism, Cardiac use Myocardial Contraction | 
              | Inoviridae | 
              | Inovirus | 
              | Inpatient Care Units | 
              | Inpatients | 
              | INR use International Normalized Ratio | 
              | Insanity Defense | 
              | Insect Bites and Stings | 
              | Insect Control | 
              | Insect Genes use Genes, Insect | 
              | Insect Genome use Genome, Insect | 
              | Insect Growth Regulators use Juvenile Hormones | 
              | Insect Hormones | 
              | Insect Parvoviruses use Densovirus | 
              | Insect Proteins | 
              | Insect Repellents | 
              | Insect Vectors | 
              | Insect Viruses | 
              | Insecta use Insects | 
              | Insecticide Resistance | 
              | Insecticide-Treated Bednets | 
              | Insecticides | 
              | Insecticides, Organochlorine | 
              | Insecticides, Organophosphate | 
              | Insecticides, Organophosphate, Antagonists use Cholinesterase Reactivators | 
              | Insecticides, Organothiophosphate use Insecticides, Organophosphate | 
              | Insecticides, Organothiophosphate, Antagonists use Cholinesterase Reactivators | 
              | Insectivora | 
              | Insects | 
              | Insecure Labor Conditions use Occupational Risks | 
              | Insemination | 
              | Insemination, Artificial | 
              | Insemination, Artificial, Heterologous | 
              | Insemination, Artificial, Homologous | 
              | Insemination, Artificial, Human Donor use Insemination, Artificial, Heterologous | 
              | Insemination, Artificial, Husband use Insemination, Artificial, Homologous | 
              | Insensitivity to Pain with Anhidrosis, Congenital use Hereditary Sensory and Autonomic Neuropathies | 
              | Insertion Mutation use Mutagenesis, Insertional | 
              | Insertion Sequence Elements use DNA Transposable Elements | 
              | Insertional Activation use Mutagenesis, Insertional | 
              | Insertional Mutagenesis use Mutagenesis, Insertional | 
              | Inservice Training | 
              | Insignia use Emblems and Insignia | 
              | Insomnia use Sleep Initiation and Maintenance Disorders | 
              | Insomnia, Fatal Familial | 
              | Inspection Chambers use Inspection Manholes | 
              | Inspection Manholes | 
              | Inspiratory Capacity | 
              | Inspiratory Positive-Pressure Breathing use Intermittent Positive-Pressure Breathing | 
              | Inspiratory Positive-Pressure Ventilation use Intermittent Positive-Pressure Ventilation | 
              | Inspiratory Reserve Volume | 
              | Instability Indexes | 
              | Instability, Joint use Joint Instability | 
              | Installations for Disaster Victims | 
              | Instillation, Bladder use Administration, Intravesical | 
              | Instillation, Drug | 
              | Instillation, Rectal use Administration, Rectal | 
              | Instillation, Vaginal use Administration, Intravaginal | 
              | Instinct | 
              | Institute of Medicine (U.S.) | 
              | Institute of Nutrition of Central America and Panama use Food and Nutrition Foundation of Central America and Panama | 
              | Institutes use Academies and Institutes | 
              | Institution use Organizations | 
              | Institutional Adherence use Guideline Adherence | 
              | Institutional Aspects use Institutional Development | 
              | Institutional Development | 
              | Institutional Ethics Committees use Ethics Committees | 
              | Institutional Evaluation | 
              | Institutional Feeding use Collective Feeding | 
              | Institutional Liability use Liability, Legal | 
              | Institutional Management Teams | 
              | Institutional Organization | 
              | Institutional Personnel Licensure use Licensure | 
              | Institutional Policy use Organizational Policy | 
              | Institutional Practice | 
              | Institutional Review Boards use Ethics Committees, Research | 
              | Institutional Tax use Taxes | 
              | Institutionalization | 
              | Institutionalized Adolescent use Adolescent, Institutionalized | 
              | Institutionalized Adolescent Health use Health of Institutionalized Adolescents | 
              | Institutionalized Child use Child, Institutionalized | 
              | Institutionalized Child Health use Health of Institutionalized Children | 
              | Institutionalized Elderly Health use Health of Institutionalized Elderly | 
              | Institutionalized Population | 
              | Institutions use Organizations | 
              | Institutions and Organizations for Measurement | 
              | Instruction use Instructional Films and Videos | 
              | Instructional Films and Videos | 
              | Instructional Models use Models, Educational | 
              | Instructional Technology use Educational Technology | 
              | Instrumental Learning use Conditioning, Operant | 
              | Instruments for Management of Scientific Activity | 
              | Insufficient Sleep Syndrome use Sleep Deprivation | 
              | Insufflation | 
              | Insufflation Anesthesia use Anesthesia, Inhalation | 
              | Insufflation Radiography use Pneumoradiography | 
              | Insula of Reil use Cerebral Cortex | 
              | Insulator Elements | 
              | Insulin | 
              | Insulin Antagonists | 
              | Insulin Antibodies | 
              | Insulin Aspart | 
              | Insulin Coma | 
              | Insulin Coma Therapy use Convulsive Therapy | 
              | Insulin Infusion Systems | 
              | Insulin Lispro | 
              | Insulin Receptor use Receptor, Insulin | 
              | Insulin Receptor alpha Subunit use Receptor, Insulin | 
              | Insulin Receptor beta Subunit use Receptor, Insulin | 
              | Insulin Receptor Protein-Tyrosine Kinase use Receptor, Insulin | 
              | Insulin Receptor Substrate Proteins | 
              | Insulin Resistance | 
              | Insulin Resistance Syndrome X use Metabolic Syndrome X | 
              | Insulin, Isophane | 
              | Insulin, Lente | 
              | Insulin, Long-Acting | 
              | Insulin, NPH use Insulin, Isophane | 
              | Insulin, Regular, Human | 
              | Insulin, Regular, Pork | 
              | Insulin, Short-Acting | 
              | Insulin, Ultralente | 
              | Insulin-Aspart use Insulin Aspart | 
              | Insulin-Like Growth Factor Binding Protein 1 | 
              | Insulin-Like Growth Factor Binding Protein 2 | 
              | Insulin-Like Growth Factor Binding Protein 3 | 
              | Insulin-Like Growth Factor Binding Protein 4 | 
              | Insulin-Like Growth Factor Binding Protein 5 | 
              | Insulin-Like Growth Factor Binding Protein 6 | 
              | Insulin-Like Growth Factor Binding Proteins | 
              | Insulin-Like Growth Factor I | 
              | Insulin-Like Growth Factor II | 
              | Insulin-Like Growth Factors use Somatomedins | 
              | Insulin-Secreting Cells | 
              | Insulinase use Insulysin | 
              | Insulinoma | 
              | Insulins | 
              | Insulinum | 
              | Insuloma use Insulinoma | 
              | Insulysin | 
              | Insurance | 
              | Insurance Audit use Insurance Claim Review | 
              | Insurance Benefits | 
              | Insurance Carriers | 
              | Insurance Case Management use Managed Care Programs | 
              | Insurance Claim Reporting | 
              | Insurance Claim Review | 
              | Insurance Claims Processing use Insurance Claim Review | 
              | Insurance Coverage | 
              | Insurance Pools | 
              | Insurance Selection Bias | 
              | Insurance Status use Insurance Coverage | 
              | Insurance, Accident | 
              | Insurance, Dental | 
              | Insurance, Disability | 
              | Insurance, Health | 
              | Insurance, Health, Catastrophic use Insurance, Major Medical | 
              | Insurance, Health, for Aged and Disabled use Medicare | 
              | Insurance, Health, Reimbursement | 
              | Insurance, Hospitalization | 
              | Insurance, Liability | 
              | Insurance, Life | 
              | Insurance, Long-Term Care | 
              | Insurance, Major Medical | 
              | Insurance, Medigap | 
              | Insurance, Nursing Services | 
              | Insurance, Pharmaceutical Services | 
              | Insurance, Physician Services | 
              | Insurance, Psychiatric | 
              | Insurance, Surgical | 
              | Insurers use Insurance Carriers | 
              | Intake Works | 
              | Integral Membrane Proteins use Membrane Proteins | 
              | Integrality in Health | 
              | Integrase use Integrases | 
              | Integrase Inhibitors | 
              | Integrase Inhibitors, HIV use HIV Integrase Inhibitors | 
              | Integrases | 
              | Integrated Academic Information Management Systems use Integrated Advanced Information Management Systems | 
              | Integrated Advanced Information Management Systems | 
              | Integrated Delivery Systems use Delivery of Health Care, Integrated | 
              | Integrated Health Action use Intersectoral Action | 
              | Integrated Health Actions use Intersectoral Action | 
              | Integrated Health Care Systems use Delivery of Health Care, Integrated | 
              | Integrated Management of Childhood Illness | 
              | Integrated Management of Water Resources use Integrated Water Resource Management | 
              | Integrated Water Resource Management | 
              | Integration Host Factor use Integration Host Factors | 
              | Integration Host Factors | 
              | Integration, Prophage use Lysogeny | 
              | Integration, Provirus use Virus Integration | 
              | Integration, Virus use Virus Integration | 
              | Integrative and Complementary Health Practices use Complementary Therapies | 
              | Integrative and Complementary Medicine use Complementary Therapies | 
              | Integrative and Complementary Practices use Complementary Therapies | 
              | Integrative Medicine | 
              | Integrin alpha Chains | 
              | Integrin alpha1 | 
              | Integrin alpha1beta1 | 
              | Integrin alpha2 | 
              | Integrin alpha2beta1 | 
              | Integrin alpha3 | 
              | Integrin alpha3beta1 | 
              | Integrin alpha4 | 
              | Integrin alpha4beta1 | 
              | Integrin alpha5 | 
              | Integrin alpha5beta1 | 
              | Integrin alpha6 | 
              | Integrin alpha6B use Integrin alpha6 | 
              | Integrin alpha6beta1 | 
              | Integrin alpha6beta4 | 
              | Integrin alphaIIb use Platelet Membrane Glycoprotein IIb | 
              | Integrin alphaIIbbeta3 use Platelet Glycoprotein GPIIb-IIIa Complex | 
              | Integrin alphaM use Antigens, CD11b | 
              | Integrin alphaMbeta2 use Macrophage-1 Antigen | 
              | Integrin alphaV | 
              | Integrin alphaVbeta3 | 
              | Integrin alphaX use Antigens, CD11c | 
              | Integrin alphaXbeta2 | 
              | Integrin beta Chains | 
              | Integrin beta1 use Antigens, CD29 | 
              | Integrin beta2 use Antigens, CD18 | 
              | Integrin beta3 | 
              | Integrin beta3A use Integrin beta3 | 
              | Integrin beta3B use Integrin beta3 | 
              | Integrin beta3C use Integrin beta3 | 
              | Integrin beta4 | 
              | Integrin-Binding Sialoprotein | 
              | Integrins | 
              | Integrons | 
              | Integumentary System | 
              | Integumentary System Physiological Phenomena | 
              | Inteins | 
              | Intellectual Disability | 
              | Intellectual Property | 
              | Intellectual Property of Pharmaceutic Products and Process | 
              | Intelligence | 
              | Intelligence Tests | 
              | Intense Pulsed Light Therapy | 
              | Intensity, Macroseismic | 
              | Intensive Care | 
              | Intensive Care Units | 
              | Intensive Care Units, Neonatal | 
              | Intensive Care Units, Pediatric | 
              | Intensive Care, Neonatal | 
              | Intensive Care, Surgical use Intensive Care | 
              | Intent | 
              | Intention | 
              | Intention to Treat Analysis | 
              | Intention Tremor use Tremor | 
              | Inter-American Development Bank | 
              | Interactive Tutorial | 
              | Interactive Ventilatory Support | 
              | Interagency Relations use Interinstitutional Relations | 
              | Interbasin Transfer | 
              | Intercalated Neurons use Interneurons | 
              | Intercalating Agents | 
              | Intercalators use Intercalating Agents | 
              | Intercarpal Joints use Carpal Joints | 
              | Intercellular Adhesion Molecule-1 | 
              | Intercellular Adhesion Molecules use Cell Adhesion Molecules | 
              | Intercellular Junctions | 
              | Intercellular Signaling Peptides and Proteins | 
              | Intercellular Space use Extracellular Space | 
              | Intercepting Channels | 
              | Intercepting Sewers | 
              | Interchange of Drugs | 
              | Intercostal Muscles | 
              | Intercostal Nerves | 
              | Intercrines use Chemokines | 
              | Interdental Papilla use Gingiva | 
              | Interdepartmental Relations | 
              | Interdigitating Cells use Dendritic Cells | 
              | Interdigitating Dendritic Cell Sarcoma use Dendritic Cell Sarcoma, Interdigitating | 
              | Interdisciplinary Communication | 
              | Interdisciplinary Health Team use Patient Care Team | 
              | Interdisciplinary Research | 
              | Interdisciplinary Studies | 
              | Interface, User Computer use User-Computer Interface | 
              | Interfascicular Oligodendroglia use Oligodendroglia | 
              | Interferometry | 
              | Interferometry, Microscopic use Microscopy, Interference | 
              | Interferon Alfa use Interferon-alpha | 
              | Interferon alpha-beta Receptor use Receptor, Interferon alpha-beta | 
              | Interferon Inducers | 
              | Interferon Receptors use Receptors, Interferon | 
              | Interferon Regulatory Factor-1 | 
              | Interferon Regulatory Factor-2 | 
              | Interferon Regulatory Factor-3 | 
              | Interferon Regulatory Factor-7 | 
              | Interferon Regulatory Factors | 
              | Interferon Type I | 
              | Interferon Type II use Interferon-gamma | 
              | Interferon, Fibroblast use Interferon-beta | 
              | Interferon, Immune use Interferon-gamma | 
              | Interferon, Leukocyte use Interferon-alpha | 
              | Interferon, Lymphoblast use Interferon-alpha | 
              | Interferon-alpha | 
              | Interferon-beta | 
              | Interferon-gamma | 
              | Interferon-gamma Release Tests | 
              | Interferon-gamma-Inducing Factor use Interleukin-18 | 
              | Interferon-Stimulated Gene Factor 3 | 
              | Interferon-Stimulated Gene Factor 3, alpha Subunit | 
              | Interferon-Stimulated Gene Factor 3, gamma Subunit | 
              | Interferons | 
              | Intergeneration Interval | 
              | Intergenerational Relations | 
              | Intergenic DNA use DNA, Intergenic | 
              | Interinstitutional Relations | 
              | Interior Design and Furnishings | 
              | Interior Furnishings use Interior Design and Furnishings | 
              | Interleukin 1 Receptor Antagonist Protein | 
              | Interleukin 18 Receptors use Receptors, Interleukin-18 | 
              | Interleukin Enhancer Binding Factor 2 use Nuclear Factor 45 Protein | 
              | Interleukin Enhancer Binding Factor 3 use Nuclear Factor 90 Proteins | 
              | Interleukin Receptor Common gamma Subunit | 
              | Interleukin Receptors use Receptors, Interleukin | 
              | Interleukin-1 | 
              | Interleukin-1 Receptor Accessory Protein | 
              | Interleukin-1 Receptor Type I use Receptors, Interleukin-1 Type I | 
              | Interleukin-1 Receptor Type II use Receptors, Interleukin-1 Type II | 
              | Interleukin-1 Receptor-Associated Kinases | 
              | Interleukin-1 Receptors use Receptors, Interleukin-1 | 
              | Interleukin-1 Receptors Type I use Receptors, Interleukin-1 Type I | 
              | Interleukin-10 | 
              | Interleukin-10 Receptor alpha Chain use Interleukin-10 Receptor alpha Subunit | 
              | Interleukin-10 Receptor alpha Subunit | 
              | Interleukin-10 Receptor beta Subunit | 
              | Interleukin-10 Receptors use Receptors, Interleukin-10 | 
              | Interleukin-11 | 
              | Interleukin-11 Receptor alpha Subunit | 
              | Interleukin-11 Receptors use Receptors, Interleukin-11 | 
              | Interleukin-12 | 
              | Interleukin-12 Receptor beta 1 Subunit | 
              | Interleukin-12 Receptor beta 2 Subunit | 
              | Interleukin-12 Receptors use Receptors, Interleukin-12 | 
              | Interleukin-12 Subunit p35 | 
              | Interleukin-12 Subunit p40 | 
              | Interleukin-13 | 
              | Interleukin-13 Receptor alpha1 Subunit | 
              | Interleukin-13 Receptor alpha2 Subunit | 
              | Interleukin-13 Receptors use Receptors, Interleukin-13 | 
              | Interleukin-15 | 
              | Interleukin-15 Receptor alpha Subunit | 
              | Interleukin-15 Receptor beta Subunit use Interleukin-2 Receptor beta Subunit | 
              | Interleukin-15 Receptor gamma Subunit use Interleukin Receptor Common gamma Subunit | 
              | Interleukin-15 Receptors use Receptors, Interleukin-15 | 
              | Interleukin-16 | 
              | Interleukin-16 Receptors use Receptors, Interleukin-16 | 
              | Interleukin-17 | 
              | Interleukin-17 Receptors use Receptors, Interleukin-17 | 
              | Interleukin-18 | 
              | Interleukin-18 Receptor alpha Subunit | 
              | Interleukin-18 Receptor beta Subunit | 
              | Interleukin-1alpha | 
              | Interleukin-1beta | 
              | Interleukin-1beta Converting Enzyme use Caspase 1 | 
              | Interleukin-2 | 
              | Interleukin-2 Receptor alpha Subunit | 
              | Interleukin-2 Receptor beta Subunit | 
              | Interleukin-2 Receptor gamma Subunit use Interleukin Receptor Common gamma Subunit | 
              | Interleukin-2 Receptors use Receptors, Interleukin-2 | 
              | Interleukin-2 Receptors alpha use Interleukin-2 Receptor alpha Subunit | 
              | Interleukin-2, 15 Receptor beta Subunit use Interleukin-2 Receptor beta Subunit | 
              | Interleukin-21 Receptor alpha Subunit | 
              | Interleukin-21 Receptor gamma Subunit use Interleukin Receptor Common gamma Subunit | 
              | Interleukin-21 Receptors use Receptors, Interleukin-21 | 
              | Interleukin-23 | 
              | Interleukin-23 Subunit p19 | 
              | Interleukin-27 | 
              | Interleukin-3 | 
              | Interleukin-3 Receptor alpha Subunit | 
              | Interleukin-3 Receptor beta Subunit use Cytokine Receptor Common beta Subunit | 
              | Interleukin-3 Receptors use Receptors, Interleukin-3 | 
              | Interleukin-4 | 
              | Interleukin-4 Receptor alpha Subunit | 
              | Interleukin-4 Receptor gamma Subunit use Interleukin Receptor Common gamma Subunit | 
              | Interleukin-4 Receptors use Receptors, Interleukin-4 | 
              | Interleukin-4 Receptors, Type I use Receptors, Interleukin-4, Type I | 
              | Interleukin-4 Receptors, Type II use Receptors, Interleukin-4, Type II | 
              | Interleukin-4, 13 Receptor Shared Subunit use Interleukin-13 Receptor alpha1 Subunit | 
              | Interleukin-4, 13 Shared Receptor use Receptors, Interleukin-4, Type II | 
              | Interleukin-5 | 
              | Interleukin-5 Receptor alpha Subunit | 
              | Interleukin-5 Receptor beta Subunit use Cytokine Receptor Common beta Subunit | 
              | Interleukin-5 Receptors use Receptors, Interleukin-5 | 
              | Interleukin-6 | 
              | Interleukin-6 Receptor alpha Subunit | 
              | Interleukin-6 Receptors use Receptors, Interleukin-6 | 
              | Interleukin-7 | 
              | Interleukin-7 Receptor alpha Subunit | 
              | Interleukin-7 Receptor gamma Subunit use Interleukin Receptor Common gamma Subunit | 
              | Interleukin-7 Receptors use Receptors, Interleukin-7 | 
              | Interleukin-8 | 
              | Interleukin-8 Receptors use Receptors, Interleukin-8 | 
              | Interleukin-8A Receptors use Receptors, Interleukin-8A | 
              | Interleukin-8B Receptors use Receptors, Interleukin-8B | 
              | Interleukin-9 | 
              | Interleukin-9 Receptors use Receptors, Interleukin-9 | 
              | Interleukins | 
              | Interlibrary Loans | 
              | Intermediate Back Muscles | 
              | Intermediate Care Facilities | 
              | Intermediate Cost Technology use Intermediate Technology | 
              | Intermediate Filament Proteins | 
              | Intermediate Filaments | 
              | Intermediate Hypothalamic Region use Hypothalamus, Middle | 
              | Intermediate Lobe of Pituitary use Pituitary Gland, Intermediate | 
              | Intermediate Technology | 
              | Intermediate-Conductance Calcium-Activated Potassium Channels | 
              | Intermetatarsal Joint use Foot Joints | 
              | Intermittent Claudication | 
              | Intermittent Explosive Disorder use Impulse Control Disorders | 
              | Intermittent Pneumatic Compression Devices | 
              | Intermittent Positive-Pressure Breathing | 
              | Intermittent Positive-Pressure Ventilation | 
              | Intermittent Urethral Catheterization | 
              | Intermittent Wetlands use Swamps | 
              | Internal Advisory Committee on Research | 
              | Internal Capsule | 
              | Internal Carotid Artery Dissection use Carotid Artery, Internal, Dissection | 
              | Internal Fixators | 
              | Internal Hazard | 
              | Internal Mammary Artery use Mammary Arteries | 
              | Internal Mammary Artery Implantation use Myocardial Revascularization | 
              | Internal Mammary-Coronary Artery Anastomosis | 
              | Internal Mechanisms of Disasters Production | 
              | Internal Medicine | 
              | Internal Migration | 
              | Internal Rules | 
              | Internal Thoracic Artery use Mammary Arteries | 
              | Internal-External Control | 
              | International Acts | 
              | International Agencies | 
              | International Agreements | 
              | International Assistance in Disaster | 
              | International Bank for Reconstruction and Development | 
              | International Centre for Settlement of Investment Disputes use International Bank for Reconstruction and Development | 
              | International Certificate of Vaccination or Prophylaxis | 
              | International Classification of Diseases | 
              | International Classification of Functioning, Disability and Health | 
              | International Classification of Hazardous Goods | 
              | International Classification of Health Problems in PHC use International Classification of Primary Care | 
              | International Classification of Health Problems in Primary Care use International Classification of Primary Care | 
              | International Classification of Health Problems in Primary Care (ICHPPC) use International Classification of Primary Care | 
              | International Classification of Health Problems in Primary Health Care use International Classification of Primary Care | 
              | International Classification of Primary Care | 
              | International Classification of Primary Care (ICPC) use International Classification of Primary Care | 
              | International Classifications of Health use Health Classifications | 
              | International Classifications on Health use Health Classifications | 
              | International Commitments use International Acts | 
              | International Conventions use International Agreements | 
              | International Cooperation | 
              | International Council of Nurses | 
              | International Declarations use International Acts | 
              | International Development Association use International Bank for Reconstruction and Development | 
              | International Development Research Centre | 
              | International Educational Exchange | 
              | International Finance Corporation use International Bank for Reconstruction and Development | 
              | International Health Classifications use Health Classifications | 
              | International Health Problems use Global Health | 
              | International Health Regulations | 
              | International Humanitarian Law | 
              | International Immunization Certificate use International Certificate of Vaccination or Prophylaxis | 
              | International Law | 
              | International Network of Information and Knowledge Sources for Sciences, Technology and Innovation Management | 
              | International Non-Proprietary Name use International Nonproprietary Names for Pharmaceutical Substances | 
              | International Non-Proprietary Names for Pharmaceutical Substances use International Nonproprietary Names for Pharmaceutical Substances | 
              | International Nonproprietary Name use International Nonproprietary Names for Pharmaceutical Substances | 
              | International Nonproprietary Names use International Nonproprietary Names for Pharmaceutical Substances | 
              | International Nonproprietary Names for Pharmaceutical Substances | 
              | International Normalized Ratio | 
              | International Organization | 
              | International Pacts use International Agreements | 
              | International Planned Parenthood Federation | 
              | International Research Information System | 
              | International Sanitary Regulations use International Health Regulations | 
              | International Statistical Classification of Diseases and Related Health Problems use International Classification of Diseases | 
              | International System of Units | 
              | International Treaties use International Agreements | 
              | International Vaccination Certificate use International Certificate of Vaccination or Prophylaxis | 
              | International Vaccination Certificate or Prophylaxis use International Certificate of Vaccination or Prophylaxis | 
              | International Water | 
              | International Water and Sanitation Decade | 
              | Internationality | 
              | Internet | 
              | Interneurons | 
              | Internment Units use Inpatient Care Units | 
              | Internship and Residency | 
              | Internship, Dental use Internship and Residency | 
              | Internship, Nonmedical | 
              | Internships | 
              | Internuclear Ophthalmoplegia use Ocular Motility Disorders | 
              | Interobserver Variation use Observer Variation | 
              | Interoception | 
              | Interparental Conflict use Family Conflict | 
              | Interpeduncular Nucleus | 
              | Interpersonal Relations | 
              | Interphalangeal Joint of Foot use Toe Joint | 
              | Interphalangeal Joint of Hand use Finger Joint | 
              | Interphalangeal Joints of Foot use Toe Joint | 
              | Interphase | 
              | Interplanetary Dust use Cosmic Dust | 
              | Interpleural Analgesia | 
              | Interprofessional Relations | 
              | Interrelation | 
              | Interrelation by Hazard | 
              | Interrelation by Negative Effects | 
              | Interrenal Gland | 
              | Interrupted Time Series use Interrupted Time Series Analysis | 
              | Interrupted Time Series Analysis | 
              | Interruption of Services Supply | 
              | Intersectoral Action | 
              | Intersectoral Action for Health use Intersectoral Action | 
              | Intersectoral Actions for Health use Intersectoral Action | 
              | Intersectoral Coordination use Intersectoral Action | 
              | Interspersed Repetitive Elements use Interspersed Repetitive Sequences | 
              | Interspersed Repetitive Sequences | 
              | Interstellar Dust use Cosmic Dust | 
              | Interstitial Cell Tumor use Leydig Cell Tumor | 
              | Interstitial Cell-Stimulating Hormone use Luteinizing Hormone | 
              | Interstitial Cells of Cajal | 
              | Interstitial Cells, Testicular use Leydig Cells | 
              | Interstitial Collagenase use Matrix Metalloproteinase 1 | 
              | Interstitial Cystitis use Cystitis, Interstitial | 
              | Interstitial Fluid use Extracellular Fluid | 
              | Interstitial Lung Diseases use Lung Diseases, Interstitial | 
              | Interstitial Nephritis use Nephritis, Interstitial | 
              | Interstitial Pregnancy use Pregnancy, Interstitial | 
              | Intertarsal Joint use Tarsal Joints | 
              | Intertidal Zone | 
              | Intertrigo | 
              | Intertrochanteric Fractures use Hip Fractures | 
              | Intertropical Convergence Zone | 
              | Intervening Sequences use Introns | 
              | Intervention Studies | 
              | Interventional Magnetic Resonance Imaging use Magnetic Resonance Imaging, Interventional | 
              | Intervertebral Disc | 
              | Intervertebral Disc Chemolysis | 
              | Intervertebral Disc Degeneration | 
              | Intervertebral Disc Displacement | 
              | Intervertebral Disk use Intervertebral Disc | 
              | Intervertebral Disk Chemolysis use Intervertebral Disc Chemolysis | 
              | Intervertebral Disk Degeneration use Intervertebral Disc Degeneration | 
              | Intervertebral Disk Displacement use Intervertebral Disc Displacement | 
              | Interview | 
              | Interview, Psychological | 
              | Interviewer Effect use Effect Modifier, Epidemiologic | 
              | Interviews as Topic | 
              | Intestinal Absorption | 
              | Intestinal Amebiasis use Dysentery, Amebic | 
              | Intestinal Atresia | 
              | Intestinal Biotherapics of Bach-Paterson use Bacillus Bach-Paterson | 
              | Intestinal Bypass use Jejunoileal Bypass | 
              | Intestinal Cancer use Intestinal Neoplasms | 
              | Intestinal Contents use Gastrointestinal Contents | 
              | Intestinal Diseases | 
              | Intestinal Diseases, Parasitic | 
              | Intestinal Elimination | 
              | Intestinal Epithelium use Intestinal Mucosa | 
              | Intestinal Fistula | 
              | Intestinal Hormone Receptors use Receptors, Gastrointestinal Hormone | 
              | Intestinal Hormones use Gastrointestinal Hormones | 
              | Intestinal L Cells use Enteroendocrine Cells | 
              | Intestinal Motility use Gastrointestinal Motility | 
              | Intestinal Mucosa | 
              | Intestinal Neoplasms | 
              | Intestinal Obstruction | 
              | Intestinal of Bach-Paterson use Bacillus Bach-Paterson | 
              | Intestinal Perforation | 
              | Intestinal Polyposis | 
              | Intestinal Polyps | 
              | Intestinal Pseudo-Obstruction | 
              | Intestinal Reabsorption | 
              | Intestinal Secretin Cells use Enteroendocrine Cells | 
              | Intestinal Secretions | 
              | Intestinal Volvulus | 
              | Intestine, Large | 
              | Intestine, Small | 
              | Intestines | 
              | Intoxication use Poisoning | 
              | Intoxication, Alcoholic use Alcoholic Intoxication | 
              | Intra-Abdominal Fat | 
              | Intra-Abdominal Hypertension | 
              | Intra-Abdominal Infusions use Infusions, Parenteral | 
              | Intra-Aortic Balloon Pumping | 
              | Intra-Arterial Lines use Vascular Access Devices | 
              | Intra-Articular Fractures | 
              | Intraabdominal Infections | 
              | Intracellular Calcium-Sensing Proteins | 
              | Intracellular Fluid | 
              | Intracellular Membranes | 
              | Intracellular Second Messengers use Second Messenger Systems | 
              | Intracellular Signaling Peptides and Proteins | 
              | Intracellular Space | 
              | Intracerebral Hemorrhage use Cerebral Hemorrhage | 
              | Intracerebral Hemorrhage, Hypertensive use Intracranial Hemorrhage, Hypertensive | 
              | Intracerebral Hemorrhage, Traumatic use Cerebral Hemorrhage, Traumatic | 
              | Intracerebral Pressure use Intracranial Pressure | 
              | Intracisternal A-Particle Elements use Genes, Intracisternal A-Particle | 
              | Intracisternal A-Particle Genes use Genes, Intracisternal A-Particle | 
              | Intracoronal Attachment use Denture Precision Attachment | 
              | Intracranial Aneurysm | 
              | Intracranial Arterial Diseases | 
              | Intracranial Arteriosclerosis | 
              | Intracranial Arteriovenous Malformations | 
              | Intracranial Arteriovenous Malformations, Congenital use Intracranial Arteriovenous Malformations | 
              | Intracranial Atherosclerosis use Intracranial Arteriosclerosis | 
              | Intracranial Central Nervous System Disorders use Brain Diseases | 
              | Intracranial Edema use Brain Edema | 
              | Intracranial Embolism | 
              | Intracranial Embolism and Thrombosis | 
              | Intracranial Gas use Pneumocephalus | 
              | Intracranial Hemorrhage, Hypertensive | 
              | Intracranial Hemorrhage, Traumatic | 
              | Intracranial Hemorrhages | 
              | Intracranial Hypertension | 
              | Intracranial Hypotension | 
              | Intracranial Hypotension, Essential use Intracranial Hypotension | 
              | Intracranial Hypotension, Secondary use Intracranial Hypotension | 
              | Intracranial Hypotension, Spontaneous use Intracranial Hypotension | 
              | Intracranial Meningeal Neoplasms use Meningeal Neoplasms | 
              | Intracranial Pressure | 
              | Intracranial Sinus Thrombophlebitis use Sinus Thrombosis, Intracranial | 
              | Intracranial Subdural Hematoma use Hematoma, Subdural, Intracranial | 
              | Intracranial Thrombosis | 
              | Intracranial Toxoplasmosis use Toxoplasmosis, Cerebral | 
              | Intracranial Tuberculoma use Tuberculoma, Intracranial | 
              | Intracranial Vascular Disorders use Cerebrovascular Disorders | 
              | Intracranial Vasospasm use Vasospasm, Intracranial | 
              | Intracytoplasmic Sperm Injections use Sperm Injections, Intracytoplasmic | 
              | Intradermal Tests | 
              | Intradural-Extramedullary Spinal Cord Neoplasms use Spinal Cord Neoplasms | 
              | Intrahepatic Cholestasis use Cholestasis, Intrahepatic | 
              | Intralaminar Nuclear Group use Intralaminar Thalamic Nuclei | 
              | Intralaminar Thalamic Nuclei | 
              | Intramedullary Nailing use Fracture Fixation, Intramedullary | 
              | Intramedullary Spinal Cord Neoplasms use Spinal Cord Neoplasms | 
              | Intramolecular Lyases | 
              | Intramolecular Oxidoreductases | 
              | Intramolecular Transferases | 
              | Intramuscular Absorption | 
              | Intranets use Computer Communication Networks | 
              | Intranuclear Inclusion Bodies | 
              | Intranuclear Space | 
              | Intraobserver Variation use Observer Variation | 
              | Intraocular Fluid use Aqueous Humor | 
              | Intraocular Lymphoma | 
              | Intraocular Pressure | 
              | Intraoperative Awareness | 
              | Intraoperative Care | 
              | Intraoperative Complications | 
              | Intraoperative Monitoring use Monitoring, Intraoperative | 
              | Intraoperative Neurophysiological Monitoring | 
              | Intraoperative Period | 
              | Intraosseous Ganglion use Bone Cysts | 
              | Intraperitoneal Infusions use Infusions, Parenteral | 
              | Intrapleural Analgesia use Interpleural Analgesia | 
              | Intraspinal Injections use Injections, Spinal | 
              | Intrathecal Injections use Injections, Spinal | 
              | Intrauterine Cross-Transfusion use Fetofetal Transfusion | 
              | Intrauterine Device Expulsion | 
              | Intrauterine Device Migration | 
              | Intrauterine Devices | 
              | Intrauterine Devices, Copper | 
              | Intrauterine Devices, Medicated | 
              | Intrauterine Diagnosis use Prenatal Diagnosis | 
              | Intrauterine Growth Retardation use Fetal Growth Retardation | 
              | Intrauterine Transfusion use Blood Transfusion, Intrauterine | 
              | Intravaginal Administration use Administration, Intravaginal | 
              | Intravenous Anesthetics use Anesthetics, Intravenous | 
              | Intravenous Antibodies use Immunoglobulins, Intravenous | 
              | Intravenous Drip use Infusions, Intravenous | 
              | Intravenous Drug Abuse use Substance Abuse, Intravenous | 
              | Intravenous Drug Delivery Systems use Infusion Pumps | 
              | Intravenous Feeding use Parenteral Nutrition | 
              | Intravenous Hyperalimentation use Parenteral Nutrition, Total | 
              | Intravenous Immunoglobulins use Immunoglobulins, Intravenous | 
              | Intravenous Infusions use Infusions, Intravenous | 
              | Intraventricular Neoplasms use Cerebral Ventricle Neoplasms | 
              | Intravesical Drug Administration use Administration, Intravesical | 
              | Intravitreal Injections | 
              | Intrinsic Factor | 
              | Intrinsic Sleep Disorders use Sleep Disorders, Intrinsic | 
              | Intrinsically Disordered Proteins | 
              | Introduced Species | 
              | Introductory Journal Article | 
              | Introns | 
              | Introns, Protein use Inteins | 
              | Introversion (Psychology) | 
              | Intubation | 
              | Intubation, Endotracheal use Intubation, Intratracheal | 
              | Intubation, Gastrointestinal | 
              | Intubation, Intratracheal | 
              | Intubation, Nasogastric use Intubation, Gastrointestinal | 
              | Intuition | 
              | Intussusception | 
              | Inuits | 
              | Inula | 
              | Inula helenium | 
              | Inulin | 
              | Inupiats use Inuits | 
              | Inv Allotypes use Immunoglobulin Km Allotypes | 
              | Invagination, Intestinal use Intussusception | 
              | Invasion of Deaths | 
              | Invasive Mole use Hydatidiform Mole, Invasive | 
              | Invasive Pulmonary Aspergillosis | 
              | Invasive Species use Introduced Species | 
              | Invasiveness, Neoplasm use Neoplasm Invasiveness | 
              | Inventions | 
              | Inventories, Hospital | 
              | Inventors | 
              | Inverse PCR use Polymerase Chain Reaction | 
              | Inversion, Chromosome use Chromosome Inversion | 
              | Inversion, Sequence use Sequence Inversion | 
              | Invertebrate Ganglia use Ganglia, Invertebrate | 
              | Invertebrate Hormones | 
              | Invertebrate Peptide Receptors use Receptors, Invertebrate Peptide | 
              | Invertebrate Photoreceptors use Photoreceptor Cells, Invertebrate | 
              | Invertebrates | 
              | Inverted Repeat Sequences | 
              | Inverted Terminal Repeat use Terminal Repeat Sequences | 
              | Investigation of Disease Outbreaks use Disease Outbreaks | 
              | Investigational New Drug Application | 
              | Investigational New Drugs use Drugs, Investigational | 
              | Investigational Therapies use Therapies, Investigational | 
              | Investigative Techniques | 
              | Investments | 
              | Investments in Health use Investments | 
              | Involuntary Commitment use Commitment of Mentally Ill | 
              | Involuntary Movements use Dyskinesias | 
              | Inward Rectifier Potassium Channels use Potassium Channels, Inwardly Rectifying | 
              | Io use Jupiter | 
              | Iobenguane use 3-Iodobenzylguanidine | 
              | Iodamide | 
              | Iodamoebiasis use Amebiasis | 
              | Iodates | 
              | Iodide Peroxidase | 
              | Iodides | 
              | Iodinase use Iodide Peroxidase | 
              | Iodinated Hydrocarbons use Hydrocarbons, Iodinated | 
              | Iodination use Halogenation | 
              | Iodination (Environmental Health) | 
              | Iodine | 
              | Iodine Compounds | 
              | Iodine Deficiency | 
              | Iodine Deficiency, Primary use Iodine Deficiency | 
              | Iodine Disinfection use Iodination (Environmental Health) | 
              | Iodine Isotopes | 
              | Iodine Radioisotopes | 
              | Iodine-123-IMP use Iofetamine | 
              | Iodipamide | 
              | Iodium Purum | 
              | Iodized Oil | 
              | Iodoacetamide | 
              | Iodoacetates | 
              | Iodoacetic Acid | 
              | Iodobenzenes | 
              | Iodobenzoates | 
              | Iodobenzoylglycine use Iodohippuric Acid | 
              | Iodochlorhydroxyquin use Clioquinol | 
              | Iodochloroxyquinoline use Clioquinol | 
              | Iodocyanopindolol | 
              | Iododeoxyuridine use Idoxuridine | 
              | Iodoform use Iodoformium | 
              | Iodoformium | 
              | Iodogorgoic Acid use Diiodotyrosine | 
              | Iodohippuric Acid | 
              | Iodopanoic Acid use Iopanoic Acid | 
              | Iodophors | 
              | Iodoproteins | 
              | Iodopyracet | 
              | Iodopyridones | 
              | Iodoquinol | 
              | Iodothyrinum use Thyreoidinum | 
              | Iodothyronine 5'-Deiodinase use Iodide Peroxidase | 
              | Iodothyronine Deiodinase use Iodide Peroxidase | 
              | Iodotyrosine use Monoiodotyrosine | 
              | Iodotyrosine Deiodase use Iodide Peroxidase | 
              | Iodum use Iodium Purum | 
              | Iofetamine | 
              | Ioglycamic Acid | 
              | Ioglycamide use Ioglycamic Acid | 
              | Iohexol | 
              | IOMID use Cryopyrin-Associated Periodic Syndromes | 
              | Ion Channel Gating | 
              | Ion Channels | 
              | Ion Channels, Calcium use Calcium Channels | 
              | Ion Channels, Chloride use Chloride Channels | 
              | Ion Channels, Potassium use Potassium Channels | 
              | Ion Channels, Sodium use Sodium Channels | 
              | Ion Cotransport use Ion Transport | 
              | Ion Exchange | 
              | Ion Exchange Resins | 
              | Ion Exchange, Intracellular use Ion Transport | 
              | Ion Pumps | 
              | Ion Transfer use Ion Exchange | 
              | Ion Transport | 
              | Ion-Selective Electrodes | 
              | Ionic Liquids | 
              | Ionic Strength use Osmolar Concentration | 
              | Ionomycin | 
              | Ionophores | 
              | Ionosphere | 
              | Ionospheric Sounding | 
              | Ions | 
              | Ions, Heavy use Heavy Ions | 
              | Iontophoresis | 
              | Iopamidol | 
              | Iopanoic Acid | 
              | Iophendylate | 
              | Iopodate use Ipodate | 
              | Iostephane use Asteraceae | 
              | Iotalamate Meglumine use Iothalamate Meglumine | 
              | Iotalamic Acid use Iothalamic Acid | 
              | Iothalamate Meglumine | 
              | Iothalamic Acid | 
              | Iothalamic Acid Methylglucamine use Iothalamate Meglumine | 
              | Iowa | 
              | Ioxaglate use Ioxaglic Acid | 
              | Ioxaglate Meglumine use Ioxaglic Acid | 
              | Ioxaglate Sodium use Ioxaglic Acid | 
              | Ioxaglic Acid | 
              | IPA (Independent Practice Association) use Independent Practice Associations | 
              | Ipecac | 
              | Ipecacuanha | 
              | Ipecine use Emetine | 
              | IPNV use Infectious pancreatic necrosis virus | 
              | Ipodate | 
              | Ipomoea | 
              | Ipomoea batatas | 
              | Ipomoea bona-nox use Convolvulus duartinus | 
              | Ipomoea nil | 
              | Ipomoea purga use Jalapa | 
              | Ipomoea purpurea | 
              | Ipomoea stans use Convolvulus stans | 
              | Ipomoea turpethum use Operculina turpenthum | 
              | Ipomovirus use Potyviridae | 
              | IPPB use Intermittent Positive-Pressure Breathing | 
              | IPPV use Intermittent Positive-Pressure Ventilation | 
              | Ipratropium | 
              | Iprindole | 
              | Iproniazid | 
              | Ipronidazole | 
              | Iproveratril use Verapamil | 
              | IPS Cells use Induced Pluripotent Stem Cells | 
              | IPSID use Immunoproliferative Small Intestinal Disease | 
              | Ir Genes use Genes, MHC Class II | 
              | Iran | 
              | Iraq | 
              | Iraq War, 2003-2011 | 
              | Ireland | 
              | Ireland, Republic of use Ireland | 
              | Iresine calea use Achyranthes calea | 
              | IRF-1 Transcription Factor use Interferon Regulatory Factor-1 | 
              | IRF-2 Transcription Factor use Interferon Regulatory Factor-2 | 
              | IRF-3 Transcription Factor use Interferon Regulatory Factor-3 | 
              | IRF-7 Transcription Factor use Interferon Regulatory Factor-7 | 
              | Irian Jaya use Indonesia | 
              | Iridaceae | 
              | Iridectomy | 
              | Iridium | 
              | Iridium Metallicum | 
              | Iridium Muriaticum | 
              | Iridium Radioisotopes | 
              | Iridocorneal Endothelial Syndrome | 
              | Iridocyclitis | 
              | Iridoid Glucosides | 
              | Iridoid Glycosides | 
              | Iridoids | 
              | Iridology | 
              | Iridoviridae | 
              | Iridovirus | 
              | Iris | 
              | Iris Diseases | 
              | Iris factissima | 
              | Iris flavissima use Iris factissima | 
              | Iris florentina | 
              | Iris foetidissima | 
              | Iris germanica | 
              | Iris minor use Iris tenax | 
              | Iris Neoplasms | 
              | Iris Plant | 
              | Iris pseudacorus | 
              | Iris tenax | 
              | Iris versicolor | 
              | Irish Free State use Ireland | 
              | Iritis | 
              | Iron | 
              | Iron and Steel Industry | 
              | Iron Bacteria | 
              | Iron Carbonyl Compounds | 
              | Iron Chelates use Iron Chelating Agents | 
              | Iron Chelating Agents | 
              | Iron Compounds | 
              | Iron Deficiency | 
              | Iron Isotopes | 
              | Iron Metabolism Disorders | 
              | Iron Overload | 
              | Iron Pipes | 
              | Iron Proteins, Non-Heme use Nonheme Iron Proteins | 
              | Iron Radioisotopes | 
              | Iron Regulatory Factor use Iron-Regulatory Proteins | 
              | Iron Regulatory Protein 1 | 
              | Iron Regulatory Protein 2 | 
              | Iron Salts | 
              | Iron, Dietary | 
              | Iron-Binding Proteins | 
              | Iron-Deficiency Anemia use Anemia, Iron-Deficiency | 
              | Iron-Dextran Complex | 
              | Iron-Regulatory Proteins | 
              | Iron-Sulfur Protein Reductase use Ferredoxin-NADP Reductase | 
              | Iron-Sulfur Proteins | 
              | Ironwort use Sideritis | 
              | Irradiation, Half-Body use Hemibody Irradiation | 
              | Irradiation, Hemibody use Hemibody Irradiation | 
              | Irrawaddy River Dolphin use Dolphins | 
              | Irrigation (Agriculture) use Agricultural Irrigation | 
              | Irrigation Canals use Irrigation Channels | 
              | Irrigation Channels | 
              | Irrigation Water use Agricultural Irrigation | 
              | Irrigation, Gastric use Gastric Lavage | 
              | Irrigation, Peritoneal use Peritoneal Lavage | 
              | Irritable Bowel Syndrome | 
              | Irritable Mood | 
              | Irritant Dermatitis use Dermatitis, Irritant | 
              | Irritants | 
              | Irritating Gases | 
              | IS Elements use DNA Transposable Elements | 
              | Isaacs Syndrome | 
              | Isatin | 
              | Isatis | 
              | Isavirus | 
              | Ischemia | 
              | Ischemia, Myocardial use Myocardial Ischemia | 
              | Ischemia-Anoxia, Brain use Hypoxia-Ischemia, Brain | 
              | Ischemia-Anoxia, Cerebral use Hypoxia-Ischemia, Brain | 
              | Ischemia-Hypoxia, Brain use Hypoxia-Ischemia, Brain | 
              | Ischemia-Hypoxia, Cerebral use Hypoxia-Ischemia, Brain | 
              | Ischemia-Reperfusion Injury use Reperfusion Injury | 
              | Ischemic Attack, Transient | 
              | Ischemic Colitis use Colitis, Ischemic | 
              | Ischemic Contracture | 
              | Ischemic Encephalopathy use Brain Ischemia | 
              | Ischemic Heart Disease use Myocardial Ischemia | 
              | Ischemic Optic Neuropathy use Optic Neuropathy, Ischemic | 
              | Ischemic Postconditioning | 
              | Ischemic Preconditioning | 
              | Ischemic Preconditioning, Myocardial | 
              | Ischemic-Hypoxic Encephalopathy use Hypoxia-Ischemia, Brain | 
              | Ischium | 
              | Ischnocera | 
              | ISCOMs | 
              | Isertia use Rubiaceae | 
              | Isethionic Acid | 
              | ISGF3 Transcription Factor use Interferon-Stimulated Gene Factor 3 | 
              | Islam | 
              | Island Flaps use Surgical Flaps | 
              | Islands | 
              | Islands of Calleja | 
              | Islands of Langerhans use Islets of Langerhans | 
              | Isle of Man use Great Britain | 
              | Islet Amyloid Polypeptide | 
              | Islet Cell Tumor use Adenoma, Islet Cell | 
              | Islet Cell Tumor, Malignant use Carcinoma, Islet Cell | 
              | Islet Cell Tumor, Ulcerogenic use Gastrinoma | 
              | Islet Cells use Islets of Langerhans | 
              | Islet-Activating Protein use Pertussis Toxin | 
              | Islets of Langerhans | 
              | Islets of Langerhans Transplantation | 
              | ISO 14000 | 
              | ISO 9000 | 
              | Iso-OMPA use Tetraisopropylpyrophosphamide | 
              | Isoamylase | 
              | Isoantibodies | 
              | Isoantigens | 
              | Isoaspartic Acid | 
              | Isobamate use Carisoprodol | 
              | Isobar | 
              | Isobutanes use Butanes | 
              | Isobutrazine use Trimeprazine | 
              | Isobutylcyanoacrylate use Bucrylate | 
              | Isobutyltheophylline use 1-Methyl-3-isobutylxanthine | 
              | Isobutyrates | 
              | Isobutyric Acids use Isobutyrates | 
              | Isocarboxazid | 
              | Isochores | 
              | Isochromosomes | 
              | Isocitrase use Isocitrate Lyase | 
              | Isocitratase use Isocitrate Lyase | 
              | Isocitrate Dehydrogenase | 
              | Isocitrate Hydro-Lyase use Aconitate Hydratase | 
              | Isocitrate Lyase | 
              | Isocitrates | 
              | Isocoumarins | 
              | Isocyanates | 
              | Isocyanides use Cyanides | 
              | Isodesmosine | 
              | Isodon | 
              | Isoelectric Focusing | 
              | Isoelectric Focusing Agents use Ampholyte Mixtures | 
              | Isoelectric Point | 
              | Isoenzymes | 
              | Isoephedrine use Pseudoephedrine | 
              | Isoetharine | 
              | Isoetretin use Acitretin | 
              | Isoflavones | 
              | Isoflurane | 
              | Isoflurophate | 
              | Isoforms use Protein Isoforms | 
              | Isofosfamide use Ifosfamide | 
              | Isografts | 
              | Isogram | 
              | Isohemagglutinins use Hemagglutinins | 
              | Isoheptanes use Heptanes | 
              | Isohexanes use Hexanes | 
              | Isohyet | 
              | Isoimmunization, Rhesus use Rh Isoimmunization | 
              | Isoindoles | 
              | Isolated Non-compaction of the Ventricular Myocardium use Isolated Noncompaction of the Ventricular Myocardium | 
              | Isolated Noncompaction of the Left Ventricular Myocardium, X-Linked use Isolated Noncompaction of the Ventricular Myocardium | 
              | Isolated Noncompaction of the Ventricular Myocardium | 
              | Isolated Population use Suburban Population | 
              | Isolation, Patient use Patient Isolation | 
              | Isolation, Social use Social Isolation | 
              | Isolectins use Lectins | 
              | Isoleucine | 
              | Isoleucine-Specific tRNA use RNA, Transfer, Ile | 
              | Isoleucine-tRNA Ligase | 
              | Isoleucyl T RNA Synthetase use Isoleucine-tRNA Ligase | 
              | Isomaltase use Oligo-1,6-Glucosidase | 
              | Isomaltose | 
              | Isomeprobamate use Carisoprodol | 
              | Isomerases | 
              | Isomerases, cis-trans use cis-trans-Isomerases | 
              | Isomerism | 
              | Isometric Contraction | 
              | Isometric Exercise use Exercise | 
              | Isoniazid | 
              | Isonicotinic Acid Hydrazide use Isoniazid | 
              | Isonicotinic Acids | 
              | Isonipecain use Meperidine | 
              | Isonipecotic Acids | 
              | Isonymy use Names | 
              | Isooctanes use Octanes | 
              | Isopathy use Isotherapy | 
              | Isopentanes use Pentanes | 
              | Isopentenyladenosine | 
              | Isophenylephrine use Metaraminol | 
              | Isophosphamide use Ifosfamide | 
              | Isopoda | 
              | Isopregnenone use Dydrogesterone | 
              | Isoprenaline use Isoproterenol | 
              | Isoprenoid Phosphate Monosaccharides use Polyisoprenyl Phosphate Monosaccharides | 
              | Isoprenoid Phosphate Oligosaccharides use Polyisoprenyl Phosphate Oligosaccharides | 
              | Isoprenoid Phosphate Sugars use Polyisoprenyl Phosphate Sugars | 
              | Isoprenoid Phosphates use Polyisoprenyl Phosphates | 
              | Isoprenylation use Prenylation | 
              | Isopromedol use Promedol | 
              | Isopropanol use 2-Propanol | 
              | Isopropyl Alcohol use 2-Propanol | 
              | Isopropyl Thiogalactoside | 
              | Isopropylarterenol use Isoproterenol | 
              | Isopropylmeprobamate use Carisoprodol | 
              | Isopropylphenyladenosine use Phenylisopropyladenosine | 
              | Isoprostanes | 
              | Isoproterenol | 
              | Isoptera | 
              | Isopyrum use Ranunculaceae | 
              | Isoquinolines | 
              | Isoseismal | 
              | Isoseismal Line use Isoseismal | 
              | Isosorbide | 
              | Isosorbide Dinitrate | 
              | Isospora | 
              | Isosporiasis | 
              | Isotach | 
              | Isotachophoresis | 
              | Isotherapy | 
              | Isotherm | 
              | Isothiocyanates | 
              | Isothiuronium | 
              | Isotonic Contraction | 
              | Isotonic Drinks use Energy Drinks | 
              | Isotonic Solutions | 
              | Isotope Labeling | 
              | Isotopes | 
              | Isotretinoin | 
              | Isotype Switching use Immunoglobulin Class Switching | 
              | Isovaleryl-CoA Dehydrogenase | 
              | Isoxazoles | 
              | Isoxsuprine | 
              | Isozymes use Isoenzymes | 
              | Ispaghula use Psyllium | 
              | Isradipine | 
              | Israel | 
              | Israeli acute paralysis virus of bees use Dicistroviridae | 
              | ISS Score use Injury Severity Score | 
              | Itai-Itai use Cadmium Poisoning | 
              | Italian Fitch use Galega officinalis | 
              | Italian Millet use Setaria Plant | 
              | Italians use Italy | 
              | Italy | 
              | Itching use Pruritus | 
              | Itcz use Intertropical Convergence Zone | 
              | Iteravirus use Densovirinae | 
              | Ithyphallus impudicus use Phallus impudicus | 
              | Ito Syndrome use Pigmentation Disorders | 
              | ITP use Inosine Triphosphate | 
              | Itraconazole | 
              | Itu | 
              | Itu Resin use Itu | 
              | IUdR use Idoxuridine | 
              | IUGR use Fetal Growth Retardation | 
              | Ivermectin | 
              | IVIG use Immunoglobulins, Intravenous | 
              | Ivory Coast use Cote d'Ivoire | 
              | Ivy Gourd use Cucurbitaceae | 
              | Ivy Method use Bleeding Time | 
              | Ivy, English use Hedera | 
              | Ivy, Poison use Toxicodendron | 
              | IWMR use Integrated Water Resource Management | 
              | Ixodes | 
              | Ixodes dammini use Ixodes | 
              | Ixodes persulcatus use Ixodes | 
              | Ixodes ricinus use Ixodes | 
              | Ixodes scapularis use Ixodes | 
              | Ixodida use Ticks | 
              | Ixodidae |