| L Cells (Cell Line) | 
              | L Forms | 
              | L-Amino Acid Oxidase | 
              | L-Aminoadipate-Semialdehyde Dehydrogenase | 
              | l-Amphetamine use Amphetamine | 
              | L-Dopa use Levodopa | 
              | L-Gularic Acid use Glucaric Acid | 
              | L-Gulonolactone Oxidase | 
              | L-Iditol 2-Dehydrogenase | 
              | L-Lactate Dehydrogenase | 
              | L-Lactate Dehydrogenase (Cytochrome) | 
              | L-Lysine 6-Transaminase | 
              | L-Monomethylarginine use omega-N-Methylarginine | 
              | L-Myc Genes use Genes, myc | 
              | L-myc Proteins use Proto-Oncogene Proteins c-myc | 
              | L-NAME use NG-Nitroarginine Methyl Ester | 
              | L-NMMA use omega-N-Methylarginine | 
              | l-Norgestrel use Levonorgestrel | 
              | L-Selectin | 
              | L-Serine Dehydratase | 
              | L-Tetramisole use Levamisole | 
              | L-Thyroxine use Thyroxine | 
              | L-Type Calcium Channels use Calcium Channels, L-Type | 
              | L-Type VDCC alpha-1 Subunit use Calcium Channels, L-Type | 
              | L1 Antigen use Leukocyte L1 Antigen Complex | 
              | L1 Elements use Long Interspersed Nucleotide Elements | 
              | L3T4 Antigens use Antigens, Differentiation, T-Lymphocyte | 
              | La Crosse virus | 
              | La Niņa Phenomenon | 
              | La Plata Dolphin use Dolphins | 
              | Labeling, Drug use Drug Labeling | 
              | Labeling, Food use Food Labeling | 
              | Labeling, Product use Product Labeling | 
              | Labetalol | 
              | Labhart-Willi Syndrome use Prader-Willi Syndrome | 
              | Labial Frenum | 
              | Labiatae use Lamiaceae | 
              | Labor Force | 
              | Labor Migration use Emigration and Immigration | 
              | Labor Onset | 
              | Labor Pain | 
              | Labor Presentation | 
              | Labor Presentation, Breech use Breech Presentation | 
              | Labor Relations | 
              | Labor Safety use Occupational Health | 
              | Labor Stage, First | 
              | Labor Stage, Second | 
              | Labor Stage, Third | 
              | Labor Unions | 
              | Labor, First Stage use Labor Stage, First | 
              | Labor, Induced | 
              | Labor, Obstetric | 
              | Labor, Second Stage use Labor Stage, Second | 
              | Labor, Third Stage use Labor Stage, Third | 
              | Laboratories | 
              | Laboratories, Dental | 
              | Laboratories, Hospital | 
              | Laboratories, Public Health use Public Health Laboratory Services | 
              | Laboratory Animal Models use Models, Animal | 
              | Laboratory Animal Science | 
              | Laboratory Animal Technologists use Animal Technicians | 
              | Laboratory Animals use Animals, Laboratory | 
              | Laboratory Chemicals | 
              | Laboratory Diagnosis use Laboratory Techniques and Procedures | 
              | Laboratory Equipment | 
              | Laboratory Experiment | 
              | Laboratory Infection | 
              | Laboratory Information Systems use Clinical Laboratory Information Systems | 
              | Laboratory Instruments use Laboratory Equipment | 
              | Laboratory Manuals | 
              | Laboratory Markers use Biological Markers | 
              | Laboratory Personnel | 
              | Laboratory Research | 
              | Laboratory Services, Public Health use Public Health Laboratory Services | 
              | Laboratory Technicians use Laboratory Personnel | 
              | Laboratory Techniques and Procedures | 
              | Laboratory Test | 
              | Laboratory Wastes | 
              | Labour Force use Labor Force | 
              | Labour Migration use Emigration and Immigration | 
              | Labour Relations use Labor Relations | 
              | Labrador use Newfoundland and Labrador | 
              | Labrador Tea use Ledum | 
              | Labrea Disease use Hepatitis D | 
              | Laburnum | 
              | Labyrinth use Ear, Inner | 
              | Labyrinth Diseases | 
              | Labyrinth Supporting Cells | 
              | Labyrinthine Fluids | 
              | Labyrinthitis | 
              | Lac Caninum | 
              | Lac Factors use Lactose Factors | 
              | Lac Felinum | 
              | Lac Gene use Lac Operon | 
              | Lac Operon | 
              | Lac Repressors use Repressor Proteins | 
              | Lac Vaccinum | 
              | Lac Vaccinum Coagulatum | 
              | Lac Vaccinum Defloratum | 
              | Laccaria | 
              | Laccase | 
              | Lacerations | 
              | Lacerta agilis | 
              | Lachesis use Viperidae | 
              | Lachesis lanceolatus use Bothrops lanceolatus | 
              | Lachesis muta | 
              | Lachnanthes tinctoria | 
              | Lacquer | 
              | Lacrimal Apparatus | 
              | Lacrimal Apparatus Diseases | 
              | Lacrimal Duct Obstruction | 
              | Lacrimal Gland use Lacrimal Apparatus | 
              | Lacrosse use Racquet Sports | 
              | Lactalbumin | 
              | Lactams | 
              | Lactams, Macrocyclic | 
              | Lactase | 
              | Lactases use beta-Galactosidase | 
              | Lactate use Lactic Acid | 
              | Lactate Dehydrogenase use L-Lactate Dehydrogenase | 
              | Lactate dehydrogenase-elevating virus | 
              | Lactate Dehydrogenases | 
              | Lactates | 
              | Lactation | 
              | Lactation Disorders | 
              | Lactation, Prolonged use Lactation | 
              | Lactic Acid | 
              | Lactic Acidosis use Acidosis, Lactic | 
              | Lactic Acidosis with Ataxia, Type I use Pyruvate Dehydrogenase Complex Deficiency Disease | 
              | Lactic Acidosis with Ataxia, Type II use Pyruvate Carboxylase Deficiency Disease | 
              | Lactic Cytochrome Reductase use L-Lactate Dehydrogenase (Cytochrome) | 
              | Lactis Acidum | 
              | Lactis Vaccini Flos | 
              | Lacto-N-neotetraosylceramide use Globosides | 
              | Lacto-N-tetraosylceramide use Globosides | 
              | Lactobacillaceae | 
              | Lactobacillus | 
              | Lactobacillus acidophilus | 
              | Lactobacillus brevis | 
              | Lactobacillus casei | 
              | Lactobacillus cellobiosus use Lactobacillus fermentum | 
              | Lactobacillus delbrueckii | 
              | Lactobacillus fermentum | 
              | Lactobacillus helveticus | 
              | Lactobacillus leichmannii | 
              | Lactobacillus plantarum | 
              | Lactobacillus reuteri | 
              | Lactobacillus rhamnosus | 
              | Lactococcus | 
              | Lactococcus lactis | 
              | Lactoferrin | 
              | Lactogen Hormone, Placental use Placental Lactogen | 
              | Lactogenic Hormone, Pituitary use Prolactin | 
              | Lactoglobulins | 
              | Lactones | 
              | Lactoperoxidase | 
              | Lactose | 
              | Lactose Factors | 
              | Lactose Intolerance | 
              | Lactose Malabsorption use Lactose Intolerance | 
              | Lactose Monohydrate use Saccharum Lactis | 
              | Lactose Operon use Lac Operon | 
              | Lactose Synthase | 
              | Lactose Synthetase use Lactose Synthase | 
              | Lactose Tolerance Test | 
              | Lactosyl Ceramides use Lactosylceramides | 
              | Lactosylceramides | 
              | Lactotrophs | 
              | Lactoyl Glutathione Lyase use Lactoylglutathione Lyase | 
              | Lactoylglutathione Lyase | 
              | Lactuca sativa use Lettuce | 
              | Lactuca sativa (Homeopathy) | 
              | Lactuca scariola use Lactuca sativa (Homeopathy) | 
              | Lactuca virosa | 
              | Lactucarium Thridace | 
              | Lactulose | 
              | Lacunar Dementia use Dementia, Multi-Infarct | 
              | LacZ Genes use Lac Operon | 
              | Lady's Mantle use Alchemilla | 
              | Lafora Disease | 
              | Lagenidium | 
              | Lagenorhynchus use Dolphins | 
              | Lagerstroemia | 
              | Lagomorpha | 
              | Lagoons | 
              | Lagothrix use Atelinae | 
              | Lagovirus | 
              | LAK Cells use Killer Cells, Lymphokine-Activated | 
              | Lake Basins | 
              | Lake Victoria Marburgvirus use Marburgvirus | 
              | Lake Water Collection | 
              | Lakes | 
              | Lakes and Impoundings Pollution | 
              | Laki-Lorand Factor use Factor XIII | 
              | Lamb's Quarters use Chenopodium album | 
              | lambda Phage use Bacteriophage lambda | 
              | lambda-Like Phages use Siphoviridae | 
              | lambda-Like Viruses use Siphoviridae | 
              | Lambdapapillomavirus | 
              | Lambert-Eaton Myasthenic Syndrome | 
              | Lamblia use Giardia | 
              | Lamblia intestinalis use Giardia lamblia | 
              | Lambliasis use Giardiasis | 
              | Lamellipodia use Pseudopodia | 
              | Lameness, Animal | 
              | Lamiaceae | 
              | Lamin Type A | 
              | Lamin Type B | 
              | Lamina Basalis Choroideae use Bruch Membrane | 
              | Lamina Elastica Posterior use Descemet Membrane | 
              | Lamina Propria use Mucous Membrane | 
              | Lamina Quadrigemina use Tectum Mesencephali | 
              | Lamina Terminalis use Hypothalamus | 
              | Laminar Air-Flow Areas use Environment, Controlled | 
              | Laminar Flow | 
              | Laminar Movement use Laminar Flow | 
              | Laminar Regime use Laminar Flow | 
              | Laminaria | 
              | Laminaria Tents use Laminaria | 
              | Laminarinase use Cellulases | 
              | Laminectomy | 
              | Laminin | 
              | Laminin Receptors use Receptors, Laminin | 
              | Lamins | 
              | Lamium album | 
              | Lamivudine | 
              | Lampreys | 
              | Lampyridae use Fireflies | 
              | LAN use Local Area Networks | 
              | Lanadigenin use Digoxigenin | 
              | Lanatosides | 
              | Land Application | 
              | Land Conservation | 
              | Land Excavation | 
              | Land Management and Planning | 
              | Land Movement | 
              | Land Planning use Land Management and Planning | 
              | Land Restoration | 
              | Land Subsidence use Land Movement | 
              | Land Use | 
              | Landau-Kleffner Syndrome | 
              | Landfill Leachate use Water Pollutants, Chemical | 
              | Landouzy-Dejerine Dystrophy use Muscular Dystrophy, Facioscapulohumeral | 
              | Landry-Guillain-Barre Syndrome use Guillain-Barre Syndrome | 
              | Landscaping, Hospital use Maintenance and Engineering, Hospital | 
              | Landslide use Landslides | 
              | Landslides | 
              | Langat virus use Encephalitis Viruses, Tick-Borne | 
              | Langer-Giedion Syndrome | 
              | Langerhans Cell Sarcoma | 
              | Langerhans Cells | 
              | Langerhans-Cell Granulomatosis use Histiocytosis, Langerhans-Cell | 
              | Langerhans-Cell Histiocytosis use Histiocytosis, Langerhans-Cell | 
              | Langhans Giant Cells use Giant Cells, Langhans | 
              | Language | 
              | Language and Speech Disorder Rehabilitation use Rehabilitation of Speech and Language Disorders | 
              | Language Arts | 
              | Language Comprehension Tests use Language Tests | 
              | Language Delay use Language Development Disorders | 
              | Language Development | 
              | Language Development Disorders | 
              | Language Disorders | 
              | Language Pathology use Speech-Language Pathology | 
              | Language Tests | 
              | Language Therapy | 
              | Language Training use Language Therapy | 
              | Langurs use Cercopithecidae | 
              | Lannea use Anacardiaceae | 
              | Lanolin | 
              | Lanosterol | 
              | Lansing Virus use Poliovirus | 
              | Lantana | 
              | Lanthanides use Lanthanoid Series Elements | 
              | Lanthanoid Series Elements | 
              | Lanthanoids use Lanthanoid Series Elements | 
              | Lanthanum | 
              | Lanugo use Hair | 
              | Laos | 
              | Laparoscopes | 
              | Laparoscopic Cholecystectomy use Cholecystectomy, Laparoscopic | 
              | Laparoscopic Surgical Procedures use Laparoscopy | 
              | Laparoscopy | 
              | Laparotomy | 
              | Lapathum acutum | 
              | Lapis Albus | 
              | Lapis Renalis use Calculus Renalis | 
              | Laportea gigas use Urtica gigas | 
              | Lappa arctium | 
              | Lappa major | 
              | Lapsana communis | 
              | Larch use Larix | 
              | Lard use Adeps suis | 
              | Large Cities | 
              | Large Maf Transcription Factors use Maf Transcription Factors, Large | 
              | Large Neutral Amino Acid-Transporter 1 | 
              | Large Ribosomal Subunits use Ribosome Subunits, Large | 
              | Large Ribosome Subunits use Ribosome Subunits, Large | 
              | Large-Conductance Calcium-Activated Potassium Channel alpha Subunits | 
              | Large-Conductance Calcium-Activated Potassium Channel beta Subunits | 
              | Large-Conductance Calcium-Activated Potassium Channels | 
              | Laridae use Charadriiformes | 
              | Larix | 
              | Larkspur use Delphinium | 
              | Laron Syndrome | 
              | Larrea | 
              | Larva | 
              | Larva Migrans | 
              | Larva Migrans, Cutaneous use Larva Migrans | 
              | Larva Migrans, Ocular use Larva Migrans | 
              | Larva Migrans, Visceral | 
              | Larvicides | 
              | Larviphage Fishes | 
              | Laryngeal Cancer use Laryngeal Neoplasms | 
              | Laryngeal Cartilages | 
              | Laryngeal Diseases | 
              | Laryngeal Edema | 
              | Laryngeal Epithelium use Laryngeal Mucosa | 
              | Laryngeal Granuloma use Granuloma, Laryngeal | 
              | Laryngeal Mask Airway use Laryngeal Masks | 
              | Laryngeal Masks | 
              | Laryngeal Mucosa | 
              | Laryngeal Muscles | 
              | Laryngeal Neoplasms | 
              | Laryngeal Nerve Palsy, Recurrent use Vocal Cord Paralysis | 
              | Laryngeal Nerve, Inferior use Recurrent Laryngeal Nerve | 
              | Laryngeal Nerve, Superior use Laryngeal Nerves | 
              | Laryngeal Nerves | 
              | Laryngeal Paralysis use Vocal Cord Paralysis | 
              | Laryngeal Perichondritis use Laryngeal Diseases | 
              | Laryngeal Prosthesis use Larynx, Artificial | 
              | Laryngeal Stenosis use Laryngostenosis | 
              | Laryngectomy | 
              | Laryngismus | 
              | Laryngitis | 
              | Laryngomalacia | 
              | Laryngopharynx use Hypopharynx | 
              | Laryngoscopes | 
              | Laryngoscopic Surgical Procedures use Laryngoscopy | 
              | Laryngoscopy | 
              | Laryngospasm use Laryngismus | 
              | Laryngostenosis | 
              | Larynx | 
              | Larynx Neoplasms use Laryngeal Neoplasms | 
              | Larynx, Artificial | 
              | Lasalocid | 
              | Laser Angioplasty use Angioplasty, Laser | 
              | Laser Biostimulation use Laser Therapy, Low-Level | 
              | Laser Coagulation | 
              | Laser Corneal Surgery use Corneal Surgery, Laser | 
              | Laser Desorption-Ionization Mass Spectrometry, Matrix-Assisted use Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization | 
              | Laser In Situ Keratomileusis use Keratomileusis, Laser In Situ | 
              | Laser Irradiation, Low-Power use Laser Therapy, Low-Level | 
              | Laser Keratectomy use Corneal Surgery, Laser | 
              | Laser Knife use Laser Therapy | 
              | Laser Lithotripsy use Lithotripsy, Laser | 
              | Laser Microscopy use Microscopy, Confocal | 
              | Laser Scalpel use Laser Therapy | 
              | Laser Scanning Confocal Microscopy use Microscopy, Confocal | 
              | Laser Scanning Cytometry | 
              | Laser Scanning Microscopy use Microscopy, Confocal | 
              | Laser Therapy | 
              | Laser Therapy, Low-Level | 
              | Laser Thermocoagulation use Laser Coagulation | 
              | Laser-Assisted Balloon Angioplasty use Angioplasty, Balloon, Laser-Assisted | 
              | Laser-Assisted Subepithelial Keratectomy use Keratectomy, Subepithelial, Laser-Assisted | 
              | Laser-Doppler Flowmetry | 
              | Laser-Doppler Velocimetry use Laser-Doppler Flowmetry | 
              | Laser-Induced Shockwave Lithotripsy use Lithotripsy, Laser | 
              | Lasers | 
              | Lasers, Dye | 
              | Lasers, Excimer | 
              | Lasers, Gas | 
              | Lasers, Semiconductor | 
              | Lasers, Solid-State | 
              | LASIK use Keratomileusis, Laser In Situ | 
              | Lassa Fever | 
              | Lassa virus | 
              | Lassitude use Fatigue | 
              | Late Gene Transcription use Transcription, Genetic | 
              | Late Infant Mortality | 
              | Latency Period (Psychology) | 
              | Latent Rat Virus use Parvovirus | 
              | Latent Schizophrenia use Schizotypal Personality Disorder | 
              | Latent TGF-beta Binding Protein use Latent TGF-beta Binding Proteins | 
              | Latent TGF-beta Binding Proteins | 
              | Lateral Bulbar Syndrome use Lateral Medullary Syndrome | 
              | Lateral Cyst use Periodontal Cyst | 
              | Lateral Dorsal Thalamic Nucleus use Lateral Thalamic Nuclei | 
              | Lateral Gene Transfer use Gene Transfer, Horizontal | 
              | Lateral Geniculate Body use Geniculate Bodies | 
              | Lateral Hypothalamic Area use Hypothalamic Area, Lateral | 
              | Lateral Hypothalamic Nucleus use Hypothalamic Area, Lateral | 
              | Lateral Ligament, Ankle | 
              | Lateral Ligaments use Collateral Ligaments | 
              | Lateral Line System | 
              | Lateral Medullary Syndrome | 
              | Lateral Menisci use Menisci, Tibial | 
              | Lateral Nuclear Group use Lateral Thalamic Nuclei | 
              | Lateral Posterior Thalamic Nucleus use Lateral Thalamic Nuclei | 
              | Lateral Pulvinar Nucleus use Pulvinar | 
              | Lateral Rectus Palsy use Abducens Nerve Diseases | 
              | Lateral Sclerosis use Motor Neuron Disease | 
              | Lateral Sinus use Transverse Sinuses | 
              | Lateral Sinus Thrombosis | 
              | Lateral Thalamic Nuclei | 
              | Lateral Ventricles | 
              | Lateral Vestibular Nucleus use Vestibular Nucleus, Lateral | 
              | Laterality of Motor Control use Functional Laterality | 
              | Latex | 
              | Latex Agglutination Tests use Latex Fixation Tests | 
              | Latex Allergy use Latex Hypersensitivity | 
              | Latex Beads use Microspheres | 
              | Latex Fixation Tests | 
              | Latex Hypersensitivity | 
              | Latex Particles use Microspheres | 
              | Latex Rubber use Rubber | 
              | Latex Spheres use Microspheres | 
              | Lathyrism | 
              | Lathyrus | 
              | Lathyrus sativus | 
              | Latin America | 
              | Latin American and Caribbean Center on Health Sciences Information | 
              | Latin American Center for Perinatology, Women and Reproductive Health | 
              | Latinas use Hispanic Americans | 
              | Latinos use Hispanic Americans | 
              | Latitude | 
              | Latrines use Toilet Facilities | 
              | Latrines (Environmental Health) | 
              | Latrodectus curassavicus use Theridion curassavicum | 
              | Latrodectus hasselti | 
              | Latrodectus katipo | 
              | Latrodectus mactans use Black Widow Spider | 
              | Latrodectus mactans (Homeopathy) | 
              | LATS use Long-Acting Thyroid Stimulator | 
              | Latvia | 
              | Laughter | 
              | Laughter Therapy | 
              | Laundering | 
              | Laundry Service, Hospital | 
              | Lauraceae | 
              | Laurates | 
              | Laurence-Moon Syndrome | 
              | Laurence-Moon-Bardet-Biedl Syndrome use Bardet-Biedl Syndrome | 
              | Laurence-Moon-Biedl Syndrome use Laurence-Moon Syndrome | 
              | Laurencia | 
              | Lauric Acid Hydroxylase use Alkane 1-Monooxygenase | 
              | Lauric Acids | 
              | Laurocerasus | 
              | Laurus | 
              | Laurus camphora use Camphora | 
              | Lauryl Alcohol use Dodecanol | 
              | LAV Antibodies use HIV Antibodies | 
              | LAV Antigens use HIV Antigens | 
              | LAV-2 use HIV-2 | 
              | LAV-HTLV-III use HIV | 
              | Lava | 
              | Lava Flow | 
              | Lavage use Irrigation | 
              | Lavage, Gastric use Gastric Lavage | 
              | Lavage, Peritoneal use Peritoneal Lavage | 
              | Lavandula | 
              | Lavender use Lavandula | 
              | Law Enforcement | 
              | Law Enforcement Officers use Police | 
              | Law of the Sea use Maritime Rights | 
              | Lawrencium | 
              | Laws | 
              | Lawson's False Cypress use Chamaecyparis | 
              | Lawsonia Bacteria | 
              | Lawsonia Infections use Desulfovibrionaceae Infections | 
              | Lawsonia intracellularis use Lawsonia Bacteria | 
              | Lawsonia Plant | 
              | Lawyers | 
              | Laxatives | 
              | Laxity, Joint use Joint Instability | 
              | Laying-on-Of-Hands use Therapeutic Touch | 
              | Lazy Eye use Amblyopia | 
              | LBNP use Lower Body Negative Pressure | 
              | LCF Factor use Interleukin-16 | 
              | lck Kinase use Lymphocyte Specific Protein Tyrosine Kinase p56(lck) | 
              | LCM Viruses use Lymphocytic choriomeningitis virus | 
              | LCMV use Lymphocytic choriomeningitis virus | 
              | LD50 use Lethal Dose 50 | 
              | LDL Cholesterol use Cholesterol, LDL | 
              | LDL Receptors use Receptors, LDL | 
              | LDL-Receptor Related Protein 1 | 
              | LDL-Receptor Related Protein 2 | 
              | LDL-Receptor Related Protein-Associated Protein | 
              | LDL-Receptor Related Proteins | 
              | LDPE Pipes use Polyethylene Pipes | 
              | LE Cells use Neutrophils | 
              | LE(X) Antigen use Antigens, CD15 | 
              | Leaching Field use Leaching Fields | 
              | Leaching Fields | 
              | Lead | 
              | Lead Encephalopathy, Childhood use Lead Poisoning, Nervous System, Childhood | 
              | Lead Induced Nervous System Diseases, Adult use Lead Poisoning, Nervous System, Adult | 
              | Lead Pipes | 
              | Lead Poisoning | 
              | Lead Poisoning, Nervous System | 
              | Lead Poisoning, Nervous System, Adult | 
              | Lead Poisoning, Nervous System, Childhood | 
              | Lead Poisoning, Neurologic, Adult use Lead Poisoning, Nervous System, Adult | 
              | Lead Poisoning, Neurologic, Childhood use Lead Poisoning, Nervous System, Childhood | 
              | Lead Radioisotopes | 
              | Lead Time | 
              | Lead-Induced Nervous System Disease, Childhood use Lead Poisoning, Nervous System, Childhood | 
              | Lead-Induced Nervous System Diseases use Lead Poisoning, Nervous System | 
              | Leader mRNA Sequences use 5' Untranslated Regions | 
              | Leader Sequences, mRNA use 5' Untranslated Regions | 
              | Leader Signal Peptides use Protein Sorting Signals | 
              | Leadership | 
              | Leaf Shine Products use Gardening Products | 
              | Leafhoppers use Hemiptera | 
              | Leakage | 
              | Leakage Control use Leakage | 
              | Leakage Detection use Leakage | 
              | Leanness use Thinness | 
              | Learned Helplessness use Helplessness, Learned | 
              | Learning | 
              | Learning Disabilities use Learning Disorders | 
              | Learning Disorders | 
              | Learning Support use Remedial Teaching | 
              | Leasing, Property | 
              | Least Syndrome of Maximum Value use Symptoms, Hierarchization | 
              | Least-Squares Analysis | 
              | Leather use Leather Industry | 
              | Leather Industry | 
              | Lebanon | 
              | Leber Hereditary Optic Atrophy use Optic Atrophy, Hereditary, Leber | 
              | Lebistes use Poecilia | 
              | LECAM-1 use L-Selectin | 
              | LECAM-2 use E-Selectin | 
              | LECAM-3 use P-Selectin | 
              | Lecithin Acyltransferase use Phosphatidylcholine-Sterol O-Acyltransferase | 
              | Lecithin Acyltransferase Deficiency | 
              | Lecithin Cholesterol Acyltransferase use Phosphatidylcholine-Sterol O-Acyltransferase | 
              | Lecithinase A1 use Phospholipases A1 | 
              | Lecithinase A2 use Phospholipases A2 | 
              | Lecithinase B use Lysophospholipase | 
              | Lecithinase C use Type C Phospholipases | 
              | Lecithinase D use Phospholipase D | 
              | Lecithinases use Phospholipases | 
              | Lecithins | 
              | Lecithinum | 
              | Leclercia use Enterobacteriaceae | 
              | Lectin Receptors use Receptors, Mitogen | 
              | Lectin, Castor Bean use Ricin | 
              | Lectin, Ricinus use Ricin | 
              | Lectin-Complement Pathway use Complement Pathway, Mannose-Binding Lectin | 
              | Lectins | 
              | Lectins, C-Type | 
              | Lectins, Kidney Bean use Phytohemagglutinins | 
              | Lectins, Plant use Plant Lectins | 
              | Lectins, Pokeweed use Pokeweed Mitogens | 
              | Lectins, S-Type use Galectins | 
              | Lectins, Triticum vulgare use Wheat Germ Agglutinins | 
              | Lectins, Wheat Germ use Wheat Germ Agglutinins | 
              | Lecture Notes | 
              | Lectures | 
              | Lecythidaceae | 
              | Ledum | 
              | Ledum palustre | 
              | Leechee use Litchi | 
              | Leeches | 
              | Leeching | 
              | Leeks use Onions | 
              | Left Atrial Function use Atrial Function, Left | 
              | Left Heart Bypass use Heart Bypass, Left | 
              | Left Heart Syndrome, Hypoplastic use Hypoplastic Left Heart Syndrome | 
              | Left Ventricular Dysfunction use Ventricular Dysfunction, Left | 
              | Left Ventricular Function use Ventricular Function, Left | 
              | Left Ventricular Hypertrophy use Hypertrophy, Left Ventricular | 
              | Left Ventricular Remodeling use Ventricular Remodeling | 
              | Left-Right Determination Factors | 
              | Lefty Proteins use Left-Right Determination Factors | 
              | Leg | 
              | Leg Bones | 
              | Leg Dermatoses | 
              | Leg Injuries | 
              | Leg Length Inequality | 
              | Leg Prosthesis use Artificial Limbs | 
              | Leg Ulcer | 
              | Leg, Artificial use Artificial Limbs | 
              | Legal Aid use Public Defender Legal Services | 
              | Legal Assets | 
              | Legal Cases | 
              | Legal Consolidation | 
              | Legal Drug Commerce use Pharmaceutical Trade | 
              | Legal Drug Commercialization use Pharmaceutical Trade | 
              | Legal Drug Trade use Pharmaceutical Trade | 
              | Legal Guardians | 
              | Legal Interdiction | 
              | Legal Intervention | 
              | Legal Medicine use Forensic Medicine | 
              | Legal Process | 
              | Legal Rules use Enacted Statutes | 
              | Legal Standards use Enacted Statutes | 
              | Legg-Perthes Disease | 
              | Leghemoglobin | 
              | Legionella | 
              | Legionella longbeachae | 
              | Legionella pneumophila | 
              | Legionella pneumophila Infections use Legionnaires' Disease | 
              | Legionellaceae | 
              | Legionellosis | 
              | Legionnaires' Disease | 
              | Legislation | 
              | Legislation as Topic | 
              | Legislation, Dental | 
              | Legislation, Drug | 
              | Legislation, Environmental | 
              | Legislation, Food | 
              | Legislation, Health | 
              | Legislation, Hospital | 
              | Legislation, Labor | 
              | Legislation, Labour use Legislation, Labor | 
              | Legislation, Medical | 
              | Legislation, Nursing | 
              | Legislation, Pharmacy | 
              | Legislation, Veterinary | 
              | Legislative Decree | 
              | Legislative Power | 
              | Legume Pod use Fruit | 
              | Legumes use Fabaceae | 
              | Leigh Disease | 
              | Leiomyoblastoma use Leiomyoma, Epithelioid | 
              | Leiomyoma | 
              | Leiomyoma, Epithelioid | 
              | Leiomyoma, Vascular use Angiomyoma | 
              | Leiomyomatosis | 
              | Leiomyosarcoma | 
              | Leiomyosarcoma, Epithelioid use Leiomyosarcoma | 
              | Leiomyosarcoma, Myxoid use Leiomyosarcoma | 
              | Leishmania | 
              | Leishmania (Leishmania) use Leishmania | 
              | Leishmania (Leishmania) donovani use Leishmania donovani | 
              | Leishmania (Leishmania) enriettii use Leishmania enriettii | 
              | Leishmania (Leishmania) infantum use Leishmania infantum | 
              | Leishmania (Leishmania) major use Leishmania major | 
              | Leishmania (Leishmania) mexicana use Leishmania mexicana | 
              | Leishmania (Leishmania) tropica use Leishmania tropica | 
              | Leishmania (Viannia) use Leishmania | 
              | Leishmania (Viannia) braziliensis use Leishmania braziliensis | 
              | Leishmania (Viannia) guyanensis use Leishmania guyanensis | 
              | Leishmania (Viannia) panamensis use Leishmania guyanensis | 
              | Leishmania braziliensis | 
              | Leishmania braziliensis braziliensis use Leishmania braziliensis | 
              | Leishmania braziliensis guyanensis use Leishmania guyanensis | 
              | Leishmania donovani | 
              | Leishmania donovani chagasi use Leishmania infantum | 
              | Leishmania donovani infantum use Leishmania infantum | 
              | Leishmania enriettii | 
              | Leishmania guyanensis | 
              | Leishmania guyanensis guyanensis use Leishmania guyanensis | 
              | Leishmania infantum | 
              | Leishmania major | 
              | Leishmania mexicana | 
              | Leishmania mexicana amazonensis use Leishmania mexicana | 
              | Leishmania mexicana mexicana use Leishmania mexicana | 
              | Leishmania tropica | 
              | Leishmania tropica major use Leishmania major | 
              | Leishmania tropica minor use Leishmania tropica | 
              | Leishmania Vaccines use Leishmaniasis Vaccines | 
              | Leishmaniasis | 
              | Leishmaniasis Vaccines | 
              | Leishmaniasis, American use Leishmaniasis, Cutaneous | 
              | Leishmaniasis, Cutaneous | 
              | Leishmaniasis, Diffuse Cutaneous | 
              | Leishmaniasis, Mucocutaneous | 
              | Leishmaniasis, New World use Leishmaniasis, Cutaneous | 
              | Leishmaniasis, Old World use Leishmaniasis, Cutaneous | 
              | Leishmaniasis, Visceral | 
              | Leishmaniavirus | 
              | Leisure Activities | 
              | Lelystad Virus use Porcine respiratory and reproductive syndrome virus | 
              | Lemmings use Arvicolinae | 
              | Lemmus use Arvicolinae | 
              | Lemna minor | 
              | Lemon Tree use Citrus | 
              | Lemongrass use Cymbopogon | 
              | Lemur | 
              | Lemur, Dwarf use Cheirogaleidae | 
              | Lemur, Mouse use Cheirogaleidae | 
              | Lemuridae | 
              | Lemuriformes use Strepsirhini | 
              | Lemuroidea use Strepsirhini | 
              | Length of Life use Longevity | 
              | Length of Stay | 
              | Leninism use Communism | 
              | Lens Capsule, Crystalline | 
              | Lens Cortex, Crystalline | 
              | Lens culinaris use Lens Plant | 
              | Lens Diseases | 
              | Lens Dislocation use Lens Subluxation | 
              | Lens Implantation, Intraocular | 
              | Lens Nucleus, Crystalline | 
              | Lens Opacities use Cataract | 
              | Lens Plant | 
              | Lens Proteins use Crystallins | 
              | Lens Subluxation | 
              | Lens, Crystalline | 
              | Lens, Eye use Lens, Crystalline | 
              | Lens, Intraocular, Phakic use Phakic Intraocular Lenses | 
              | Lenses | 
              | Lenses, Contact use Contact Lenses | 
              | Lenses, Contact, Hydrophilic use Contact Lenses, Hydrophilic | 
              | Lenses, Intraocular | 
              | Lenticular Nucleus use Corpus Striatum | 
              | Lenticulostriate Diseases, Vascular use Basal Ganglia Cerebrovascular Disease | 
              | Lenticulostriate Vasculopathy use Basal Ganglia Cerebrovascular Disease | 
              | Lentiform Nucleus use Corpus Striatum | 
              | Lentiginosis use Lentigo | 
              | Lentiginosis, Perioral use Peutz-Jeghers Syndrome | 
              | Lentigo | 
              | Lentigo, Malignant use Hutchinson's Melanotic Freckle | 
              | Lentils use Lens Plant | 
              | Lentinan | 
              | Lentinula | 
              | Lentinula edodes use Shiitake Mushrooms | 
              | Lentinus use Lentinula | 
              | Lentinus edodes use Shiitake Mushrooms | 
              | Lentivirinae use Lentivirus | 
              | Lentivirus | 
              | Lentivirus Infections | 
              | Lentivirus, Puma use Immunodeficiency Virus, Feline | 
              | Lentiviruses, Bovine | 
              | Lentiviruses, Equine | 
              | Lentiviruses, Feline | 
              | Lentiviruses, Ovine-Caprine | 
              | Lentiviruses, Primate | 
              | Leon Virus use Poliovirus | 
              | Leonotis use Lamiaceae | 
              | Leontiasis Ossium use Hyperostosis Frontalis Interna | 
              | Leontopithecus | 
              | Leonurus | 
              | Leonurus cardiaca | 
              | Leopard use Panthera | 
              | Leopard Frog use Rana pipiens | 
              | Leopard Frog Carcinoma Virus use Herpesvirus 1, Ranid | 
              | LEOPARD Syndrome | 
              | Leopard's Bane, False use Asteraceae | 
              | Leopards Bane use Arnica | 
              | Leopards, Snow use Felidae | 
              | Leopardus pardalis use Felidae | 
              | Lepeophtheirus salmonis use Copepoda | 
              | Leper Colonies | 
              | Lepidium | 
              | Lepidium bonariense | 
              | Lepidium sativum | 
              | Lepidoptera | 
              | Lepidozamia use Zamiaceae | 
              | Lepilemur use Lemuridae | 
              | Leporipoxvirus | 
              | Lepromin | 
              | Leprostatic Agents | 
              | Leprosy | 
              | Leprosy, Borderline | 
              | Leprosy, Cutaneous use Leprosy, Lepromatous | 
              | Leprosy, Dimorphous use Leprosy, Borderline | 
              | Leprosy, Lepromatous | 
              | Leprosy, Macular use Leprosy, Tuberculoid | 
              | Leprosy, Neural use Leprosy, Tuberculoid | 
              | Leprosy, Nodular use Leprosy, Lepromatous | 
              | Leprosy, Tuberculoid | 
              | Leptandra virginica | 
              | Leptazole use Pentylenetetrazole | 
              | Leptilon canadense use Erigeron canadensis | 
              | Leptin | 
              | Leptin Receptors use Receptors, Leptin | 
              | Leptoconops use Ceratopogonidae | 
              | Leptomeningeal Cysts use Arachnoid Cysts | 
              | Leptomonas use Trypanosomatina | 
              | Leptonema use Meiotic Prophase I | 
              | Leptophos | 
              | Leptospermum | 
              | Leptospira | 
              | Leptospira interrogans | 
              | Leptospira interrogans serovar australis | 
              | Leptospira interrogans serovar autumnalis | 
              | Leptospira interrogans serovar canicola | 
              | Leptospira interrogans serovar hebdomadis | 
              | Leptospira interrogans serovar icterohaemorrhagiae | 
              | Leptospira interrogans serovar pomona | 
              | Leptospiraceae | 
              | Leptospirosis | 
              | Leptospirosis, Icterohemorrhagic use Weil Disease | 
              | Leptotene Stage use Meiotic Prophase I | 
              | Leptothrix | 
              | Leptotrichia | 
              | Leptotrombidium use Trombiculidae | 
              | Lepus use Hares | 
              | Leriche Syndrome | 
              | Lesbianism use Homosexuality, Female | 
              | Lesch-Nyhan Syndrome | 
              | Lesotho | 
              | Lespedeza | 
              | Lespedeza capitata | 
              | Lespedeza sieboldii | 
              | Less-Developed Countries use Developing Countries | 
              | Lesser Sac use Peritoneal Cavity | 
              | LET use Linear Energy Transfer | 
              | Lethal Dose 50 | 
              | Lethal Junctional Epidermolysis Bullosa use Epidermolysis Bullosa, Junctional | 
              | Lethal Midline Granuloma use Granuloma, Lethal Midline | 
              | Lethality | 
              | Lethargic Encephalitis, Type C use Encephalitis, St. Louis | 
              | Lethargy | 
              | LETS Proteins use Fibronectins | 
              | Letter | 
              | Lettuce | 
              | Lettuce infectious yellows virus use Crinivirus | 
              | Lettuce, Water use Araceae | 
              | Leu Antigens use Antigens, Differentiation | 
              | Leu Antigens, B-Lymphocyte use Antigens, Differentiation, B-Lymphocyte | 
              | Leu Antigens, T-Lymphocyte use Antigens, Differentiation, T-Lymphocyte | 
              | Leu-2 Antigens use Antigens, CD8 | 
              | Leu-CAM Receptor Family use Receptors, Leukocyte-Adhesion | 
              | Leu-M1 Antigens use Antigens, CD15 | 
              | Leu-M5 Antigens use Antigens, CD11c | 
              | Leucanthemum vulgare use Chrysanthemum leucanthemum | 
              | Leucenine use Mimosine | 
              | Leucenol use Mimosine | 
              | Leucine | 
              | Leucine Aminopeptidase use Leucyl Aminopeptidase | 
              | Leucine Dehydrogenase | 
              | Leucine Enkephalin use Enkephalin, Leucine | 
              | Leucine Enkephalin-2-Alanine use Enkephalin, Leucine-2-Alanine | 
              | Leucine Transaminase | 
              | Leucine Zippers | 
              | Leucine-Responsive Regulatory Protein | 
              | Leucine-Specific tRNA use RNA, Transfer, Leu | 
              | Leucine-tRNA Ligase | 
              | Leucoagaricus procerus use Agaricus procerus | 
              | Leucogenenol | 
              | Leucoharmine use Harmine | 
              | Leucomycin use Kitasamycin | 
              | Leucomycins | 
              | Leuconostoc | 
              | Leucotomy use Psychosurgery | 
              | Leucovorin | 
              | Leucyl Aminopeptidase | 
              | Leucyl T RNA Synthetase use Leucine-tRNA Ligase | 
              | Leucyl-beta-Naphthylamidase | 
              | Leukapheresis | 
              | Leukemia | 
              | Leukemia Inhibitory Factor | 
              | Leukemia Inhibitory Factor Receptor use Receptors, OSM-LIF | 
              | Leukemia Inhibitory Factor Receptor alpha Subunit | 
              | Leukemia L1210 | 
              | Leukemia L5178 | 
              | Leukemia P388 | 
              | Leukemia Virus Antibodies, Human T-Cell use Deltaretrovirus Antibodies | 
              | Leukemia Virus Antigens, Human T-Cell use Deltaretrovirus Antigens | 
              | Leukemia Virus I, Human T-Cell use Human T-lymphotropic virus 1 | 
              | Leukemia Virus II, Human T-Cell use Human T-Lymphotropic Virus 2 | 
              | Leukemia Virus, Bovine | 
              | Leukemia Virus, Feline | 
              | Leukemia Virus, Gibbon Ape | 
              | Leukemia Virus, Murine | 
              | Leukemia Viruses, Human T-Cell use Deltaretrovirus | 
              | Leukemia, B-Cell | 
              | Leukemia, B-Cell, Chronic use Leukemia, Lymphocytic, Chronic, B-Cell | 
              | Leukemia, Basophilic, Acute | 
              | Leukemia, Biphenotypic, Acute | 
              | Leukemia, Bovine use Enzootic Bovine Leukosis | 
              | Leukemia, Eosinophilic use Hypereosinophilic Syndrome | 
              | Leukemia, Eosinophilic, Acute | 
              | Leukemia, Erythroblastic, Acute | 
              | Leukemia, Experimental | 
              | Leukemia, Feline | 
              | Leukemia, Granulocytic use Leukemia, Myeloid | 
              | Leukemia, Granulocytic, Chronic use Leukemia, Myelogenous, Chronic, BCR-ABL Positive | 
              | Leukemia, Granulocytic, Chronic-Phase use Leukemia, Myeloid, Chronic-Phase | 
              | Leukemia, Hairy Cell | 
              | Leukemia, Large Granular Lymphocytic | 
              | Leukemia, Lymphoblastic use Precursor Cell Lymphoblastic Leukemia-Lymphoma | 
              | Leukemia, Lymphoblastic, Acute, T-Cell use Precursor T-Cell Lymphoblastic Leukemia-Lymphoma | 
              | Leukemia, Lymphocytic use Leukemia, Lymphoid | 
              | Leukemia, Lymphocytic, Acute, Mixed-Cell use Leukemia, Biphenotypic, Acute | 
              | Leukemia, Lymphocytic, Acute, T-Cell use Precursor T-Cell Lymphoblastic Leukemia-Lymphoma | 
              | Leukemia, Lymphocytic, B-Cell use Leukemia, B-Cell | 
              | Leukemia, Lymphocytic, Chronic use Leukemia, Lymphocytic, Chronic, B-Cell | 
              | Leukemia, Lymphocytic, Chronic, B-Cell | 
              | Leukemia, Lymphocytic, Large Granular use Leukemia, Large Granular Lymphocytic | 
              | Leukemia, Lymphocytic, T-Cell use Leukemia, T-Cell | 
              | Leukemia, Lymphoid | 
              | Leukemia, Lymphoid, Acute use Precursor Cell Lymphoblastic Leukemia-Lymphoma | 
              | Leukemia, Mast-Cell | 
              | Leukemia, Megakaryoblastic, Acute | 
              | Leukemia, Megakaryocytic use Leukemia, Megakaryoblastic, Acute | 
              | Leukemia, Megakaryocytic, Acute use Leukemia, Megakaryoblastic, Acute | 
              | Leukemia, Mixed, B- and T-Cell use Leukemia, Biphenotypic, Acute | 
              | Leukemia, Mixed-Cell use Leukemia, Biphenotypic, Acute | 
              | Leukemia, Monoblastic, Acute use Leukemia, Monocytic, Acute | 
              | Leukemia, Monocytic, Acute | 
              | Leukemia, Myelocytic use Leukemia, Myeloid | 
              | Leukemia, Myelocytic, Chronic use Leukemia, Myelogenous, Chronic, BCR-ABL Positive | 
              | Leukemia, Myelogenous use Leukemia, Myeloid | 
              | Leukemia, Myelogenous, Acute use Leukemia, Myeloid, Acute | 
              | Leukemia, Myelogenous, Chronic use Leukemia, Myelogenous, Chronic, BCR-ABL Positive | 
              | Leukemia, Myelogenous, Chronic, BCR-ABL Positive | 
              | Leukemia, Myelogenous, Chronic-Phase use Leukemia, Myeloid, Chronic-Phase | 
              | Leukemia, Myeloid | 
              | Leukemia, Myeloid, Accelerated Phase | 
              | Leukemia, Myeloid, Acute | 
              | Leukemia, Myeloid, Acute, M3 use Leukemia, Promyelocytic, Acute | 
              | Leukemia, Myeloid, Acute, M4 use Leukemia, Myelomonocytic, Acute | 
              | Leukemia, Myeloid, Acute, M5 use Leukemia, Monocytic, Acute | 
              | Leukemia, Myeloid, Acute, M6 use Leukemia, Erythroblastic, Acute | 
              | Leukemia, Myeloid, Acute, M7 use Leukemia, Megakaryoblastic, Acute | 
              | Leukemia, Myeloid, Aggressive-Phase use Leukemia, Myeloid, Accelerated Phase | 
              | Leukemia, Myeloid, Chronic use Leukemia, Myelogenous, Chronic, BCR-ABL Positive | 
              | Leukemia, Myeloid, Chronic, Atypical, BCR-ABL Negative | 
              | Leukemia, Myeloid, Chronic-Phase | 
              | Leukemia, Myeloid, Naegeli-Type use Leukemia, Myelomonocytic, Acute | 
              | Leukemia, Myeloid, Philadelphia-Negative use Leukemia, Myeloid, Chronic, Atypical, BCR-ABL Negative | 
              | Leukemia, Myeloid, Schilling-Type use Leukemia, Monocytic, Acute | 
              | Leukemia, Myeloid, Stable-Phase use Leukemia, Myeloid, Chronic-Phase | 
              | Leukemia, Myelomonocytic, Acute | 
              | Leukemia, Myelomonocytic, Chronic | 
              | Leukemia, Myelomonocytic, Juvenile | 
              | Leukemia, Natural Killer Cell Large Granular Lymphocytic use Leukemia, Large Granular Lymphocytic | 
              | Leukemia, Neutrophilic, Chronic | 
              | Leukemia, Nonlymphocytic, Acute use Leukemia, Myeloid, Acute | 
              | Leukemia, Plasma Cell | 
              | Leukemia, Plasmacytic use Leukemia, Plasma Cell | 
              | Leukemia, Pre-B-Cell use Precursor B-Cell Lymphoblastic Leukemia-Lymphoma | 
              | Leukemia, Progranulocytic use Leukemia, Promyelocytic, Acute | 
              | Leukemia, Prolymphocytic | 
              | Leukemia, Prolymphocytic, B-Cell | 
              | Leukemia, Prolymphocytic, T-Cell | 
              | Leukemia, Promyelocytic, Acute | 
              | Leukemia, Radiation-Induced | 
              | Leukemia, Smoldering use Anemia, Refractory, with Excess of Blasts | 
              | Leukemia, T-Cell | 
              | Leukemia, T-Cell Large Granular Lymphocytic use Leukemia, Large Granular Lymphocytic | 
              | Leukemia, T-Cell, Acute use Precursor T-Cell Lymphoblastic Leukemia-Lymphoma | 
              | Leukemia, T-Cell, Chronic use Leukemia, Prolymphocytic, T-Cell | 
              | Leukemia-Lymphoma Virus Antibodies, Human T-Cell use Deltaretrovirus Antibodies | 
              | Leukemia-Lymphoma Virus Antigens, Human T-Cell use Deltaretrovirus Antigens | 
              | Leukemia-Lymphoma Virus I Antibodies, Human T-Cell use HTLV-I Antibodies | 
              | Leukemia-Lymphoma Virus I Antigens, Human T-Cell use HTLV-I Antigens | 
              | Leukemia-Lymphoma Virus II Antibodies, Human T-Cell use HTLV-II Antibodies | 
              | Leukemia-Lymphoma Virus II Antigens, Human T-Cell use HTLV-II Antigens | 
              | Leukemia-Lymphoma, Adult T-Cell | 
              | Leukemic Gene Expression Regulation use Gene Expression Regulation, Leukemic | 
              | Leukemic Infiltration | 
              | Leukemic Reticuloendotheliosis use Leukemia, Hairy Cell | 
              | Leukemogenic Viruses use Retroviridae | 
              | Leukemoid Reaction | 
              | Leukoaraiosis | 
              | Leukocidins | 
              | Leukocytapheresis use Leukapheresis | 
              | Leukocyte Adherence Inhibition Test | 
              | Leukocyte Adhesion Molecules use Cell Adhesion Molecules | 
              | Leukocyte Adhesion Protein p150,95 use Integrin alphaXbeta2 | 
              | Leukocyte Antigens use HLA Antigens | 
              | Leukocyte Common Antigens use Antigens, CD45 | 
              | Leukocyte Count | 
              | Leukocyte Count, Differential use Leukocyte Count | 
              | Leukocyte Culture Test, Mixed use Lymphocyte Culture Test, Mixed | 
              | Leukocyte Differentiation Antigens, Human use Antigens, CD | 
              | Leukocyte Disorders | 
              | Leukocyte Elastase | 
              | Leukocyte Function Associated Antigen-1 use Lymphocyte Function-Associated Antigen-1 | 
              | Leukocyte L1 Antigen Complex | 
              | Leukocyte L1 Protein use Leukocyte L1 Antigen Complex | 
              | Leukocyte Migration Inhibition Tests use Cell Migration Assays, Leukocyte | 
              | Leukocyte Migration Test use Cell Migration Assays, Leukocyte | 
              | Leukocyte Migration-Inhibitory Factors | 
              | Leukocyte Number use Leukocyte Count | 
              | Leukocyte Reduction Procedures | 
              | Leukocyte Rolling | 
              | Leukocyte Transfusion | 
              | Leukocyte-Adhesion Deficiency Syndrome | 
              | Leukocyte-Adhesion Receptors use Receptors, Leukocyte-Adhesion | 
              | Leukocytes | 
              | Leukocytes, Mononuclear | 
              | Leukocytes, Polymorphonuclear use Neutrophils | 
              | Leukocytopenia use Leukopenia | 
              | Leukocytosis | 
              | Leukodystrophy, Globoid Cell | 
              | Leukodystrophy, Metachromatic | 
              | Leukodystrophy, Spongiform use Canavan Disease | 
              | Leukoedema, Oral | 
              | Leukoencephalitis, Acute Hemorrhagic | 
              | Leukoencephalitis, Subacute Sclerosing use Subacute Sclerosing Panencephalitis | 
              | Leukoencephalopathy Syndrome, Posterior use Posterior Leukoencephalopathy Syndrome | 
              | Leukoencephalopathy, Progressive Multifocal | 
              | Leukoencephalopathy, Subcortical use Dementia, Vascular | 
              | Leukokeratosis, Hereditary Mucosal | 
              | Leukoma use Corneal Opacity | 
              | Leukomalacia, Periventricular | 
              | Leukopenia | 
              | Leukopheresis use Leukapheresis | 
              | Leukoplakia | 
              | Leukoplakia, Hairy | 
              | Leukoplakia, Oral | 
              | Leukopoiesis | 
              | Leukorrhea | 
              | Leukosis Virus, Avian use Avian leukosis virus | 
              | Leukosis, Avian use Avian Leukosis | 
              | Leukosis, Bovine use Enzootic Bovine Leukosis | 
              | Leukostasis | 
              | Leukostasis Syndrome use Leukostasis | 
              | Leukotaxis use Chemotaxis, Leukocyte | 
              | Leukotomy use Psychosurgery | 
              | Leukotriene A4 | 
              | Leukotriene Antagonists | 
              | Leukotriene B4 | 
              | Leukotriene B4 Receptors use Receptors, Leukotriene B4 | 
              | Leukotriene C4 | 
              | Leukotriene D4 | 
              | Leukotriene E4 | 
              | Leukotriene Receptor Antagonists use Leukotriene Antagonists | 
              | Leukotriene Receptors use Receptors, Leukotriene | 
              | Leukotrienes | 
              | Leukovirus Proteins use Retroviridae Proteins | 
              | Leukoviruses use Retroviridae | 
              | Leupeptins | 
              | Leuprolide | 
              | Leuprorelin use Leuprolide | 
              | Leurocristine use Vincristine | 
              | Leuzea | 
              | Levallorphan | 
              | Levamethadyl use Methadyl Acetate | 
              | Levamisole | 
              | Levans use Fructans | 
              | Levarterenol use Norepinephrine | 
              | Levcromakalim use Cromakalim | 
              | LeVeen Shunt use Peritoneovenous Shunt | 
              | Level of Health use Health Status | 
              | Levico Aqua | 
              | Levisticum | 
              | Levisticum officinale | 
              | Leviviridae | 
              | Levivirus | 
              | Levo-Gularic Acid use Glucaric Acid | 
              | Levoamphetamine use Amphetamine | 
              | Levobunolol | 
              | Levocardia | 
              | Levodopa | 
              | Levofloxacin use Ofloxacin | 
              | Levomeprazin use Methotrimeprazine | 
              | Levomepromazine use Methotrimeprazine | 
              | Levomepromazinum | 
              | Levomycetin use Chloramphenicol | 
              | Levonorepinephrine use Norepinephrine | 
              | Levonorgestrel | 
              | Levopropoxyphene | 
              | Levorin use Candicidin | 
              | Levorphan use Levorphanol | 
              | Levorphanol | 
              | Levotetramisole use Levamisole | 
              | Levothyroxine use Thyroxine | 
              | Levulinic Acids | 
              | Levulose use Fructose | 
              | Lewandowsky-Lutz Disease use Epidermodysplasia Verruciformis | 
              | Lewis Blood-Group System | 
              | Lewis System use Lewis Blood-Group System | 
              | Lewis X Antigen use Antigens, CD15 | 
              | Lewy Bodies | 
              | Lewy Body Disease | 
              | Lewy Body Parkinson Disease use Parkinson Disease | 
              | Leydig Cell Tumor | 
              | Leydig Cells | 
              | LFA-1 use Lymphocyte Function-Associated Antigen-1 | 
              | LFA-3 use Antigens, CD58 | 
              | LH (Luteinizing Hormone) use Luteinizing Hormone | 
              | LH Receptors use Receptors, LH | 
              | LH, alpha Subunit use Glycoprotein Hormones, alpha Subunit | 
              | LH, beta Subunit use Luteinizing Hormone, beta Subunit | 
              | LH-FSH Releasing Hormone use Gonadotropin-Releasing Hormone | 
              | LH-hCG Receptors use Receptors, LH | 
              | Lhermitte-Duclos Disease use Hamartoma Syndrome, Multiple | 
              | LHFSHRH Receptors use Receptors, LHRH | 
              | LHRH use Gonadotropin-Releasing Hormone | 
              | LHRH Receptors use Receptors, LHRH | 
              | LHRH, Trp(6)- use Triptorelin | 
              | Li-Fraumeni Syndrome | 
              | Liability, Legal | 
              | Lian qiao use Forsythia | 
              | Liatris spicata | 
              | Liberia | 
              | Liberian Mongoose use Herpestidae | 
              | Liberiictis use Herpestidae | 
              | Liberty use Freedom | 
              | Libido | 
              | Libman-Sacks Disease use Lupus Erythematosus, Systemic | 
              | Libocedrus | 
              | Librarians | 
              | Librarianship use Library Science | 
              | Libraries | 
              | Libraries, Dental | 
              | Libraries, Digital | 
              | Libraries, Health Science use Libraries, Medical | 
              | Libraries, Hospital | 
              | Libraries, Medical | 
              | Libraries, Nursing | 
              | Library Administration | 
              | Library Associations | 
              | Library Automation | 
              | Library Collection Development | 
              | Library Materials | 
              | Library Schools | 
              | Library Science | 
              | Library Services | 
              | Library Surveys | 
              | Library Technical Services | 
              | Libya | 
              | Lice | 
              | Lice Infestations | 
              | Lice, Plant use Aphids | 
              | Licenses use Licensure | 
              | Licensure | 
              | Licensure, Dental | 
              | Licensure, Hospital | 
              | Licensure, Institutional, Personnel use Licensure | 
              | Licensure, Medical | 
              | Licensure, Nursing | 
              | Licensure, Pharmacy | 
              | Lichen islandicus use Cetraria islandica | 
              | Lichen Myxedematosus use Scleromyxedema | 
              | Lichen Nitidus | 
              | Lichen Planus | 
              | Lichen Planus, Oral | 
              | Lichen Ruber Planus use Lichen Planus | 
              | Lichen Sclerosus use Lichen Sclerosus et Atrophicus | 
              | Lichen Sclerosus et Atrophicus | 
              | Lichen Simplex Chronicus use Neurodermatitis | 
              | Lichenic Acid use Fumaricum Acidum | 
              | Licheniform Eruptions use Lichenoid Eruptions | 
              | Lichenoid Eruptions | 
              | Lichens | 
              | Licorice use Glycyrrhiza | 
              | Lidocaine | 
              | Lidoflazine | 
              | Lie Detection | 
              | Liechtenstein | 
              | Life | 
              | Life Care Centers, Retirement use Housing for the Elderly | 
              | Life Change Events | 
              | Life Cycle use Life Cycle Stages | 
              | Life Cycle Stages | 
              | Life Expectancy | 
              | Life Expectancy at Birth | 
              | Life Experiences use Life Change Events | 
              | Life Islands use Patient Isolators | 
              | Life Sciences use Biological Science Disciplines | 
              | Life Stress use Stress, Psychological | 
              | Life Style | 
              | Life Support Care | 
              | Life Support Systems | 
              | Life Support Systems, Regenerative use Ecological Systems, Closed | 
              | Life Support, Advanced Cardiac use Advanced Cardiac Life Support | 
              | Life Table Analysis use Life Tables | 
              | Life Table Methods use Life Tables | 
              | Life Table Models use Life Tables | 
              | Life Tables | 
              | Life Valuation, Economic use Value of Life | 
              | Life-Breath (Philosophy) use Qi | 
              | Lifting | 
              | Ligamenta Flava use Ligamentum Flavum | 
              | Ligaments | 
              | Ligaments, Articular | 
              | Ligaments, Collateral use Collateral Ligaments | 
              | Ligaments, Lateral use Collateral Ligaments | 
              | Ligamentum Collaterale Tibiale use Medial Collateral Ligament, Knee | 
              | Ligamentum Flavum | 
              | Ligamentum Laterale Articulationis Talocruralis use Lateral Ligament, Ankle | 
              | Ligamentum Longitudinale use Longitudinal Ligaments | 
              | Ligamentum Patellae use Patellar Ligament | 
              | Ligandins use Glutathione Transferase | 
              | Ligands | 
              | Ligaria cuneifolia use Loranthaceae | 
              | Ligase Chain Reaction | 
              | Ligases | 
              | Ligation | 
              | Ligation, Tubal use Sterilization, Tubal | 
              | Light | 
              | Light Adaptation use Adaptation, Ocular | 
              | Light Coagulation | 
              | Light Metals use Metals, Light | 
              | LIGHT Protein use Tumor Necrosis Factor Ligand Superfamily Member 14 | 
              | Light Sensitivity use Photophobia | 
              | Light Signal Transduction | 
              | Light Therapy use Phototherapy | 
              | Light, Visible use Light | 
              | Light-Curing of Dental Cements use Dental Bonding, Light-Cured | 
              | Light-Harvesting Protein Complexes | 
              | Lightheadedness use Dizziness | 
              | Lighting | 
              | Lightning | 
              | Lightning Injuries | 
              | Lightning Stroke use Lightning Injuries | 
              | Lignac-Fanconi Syndrome use Fanconi Syndrome | 
              | Lignans | 
              | Lignin | 
              | Lignocaine use Lidocaine | 
              | Ligusticum | 
              | Ligustrum | 
              | Ligustrum lucidum use Ligustrum | 
              | Likelihood Functions | 
              | Liliaceae | 
              | Lilium | 
              | Lilium album | 
              | Lilium superbum | 
              | Lilium tigrinum | 
              | Lily use Lilium | 
              | Lily, Peruvian use Alstroemeria | 
              | Lily, Water use Nymphaea | 
              | Lily, Yellow Pond use Nuphar | 
              | Lily-of-the-Valley use Convallaria | 
              | Lilyturf use Liriope Plant | 
              | Lim Kinases | 
              | Limb Buds | 
              | Limb Cramp use Muscle Cramp | 
              | Limb Deformities, Congenital | 
              | Limb Prosthesis use Artificial Limbs | 
              | Limb Salvage | 
              | Limbic Encephalitis | 
              | Limbic System | 
              | Limbs use Extremities | 
              | Limbs, Artificial use Artificial Limbs | 
              | Limbus Corneae | 
              | Lime and Plaster Industry | 
              | Lime, Australian Wild use Rutaceae | 
              | Limes use Citrus aurantiifolia | 
              | Limex ater | 
              | Limit Dextrinosis use Glycogen Storage Disease Type III | 
              | Limitans Nucleus use Posterior Thalamic Nuclei | 
              | Limitation of Activity, Chronic use Activities of Daily Living | 
              | Limnobium use Hydrocharitaceae | 
              | Limnological Resources use Water Resources | 
              | Limnology | 
              | Limonins | 
              | Limonium use Plumbaginaceae | 
              | Limonoids use Limonins | 
              | Limulus use Horseshoe Crabs | 
              | Limulus cyclops | 
              | Limulus polyphemus use Horseshoe Crabs | 
              | Limulus Test | 
              | Linac Radiosurgery use Radiosurgery | 
              | Linaceae | 
              | Linaria | 
              | Linaria vulgaris | 
              | Lincolnensin use Lincomycin | 
              | Lincomycin | 
              | Lincomycin, (2S-cis)-Isomer use Lincomycin | 
              | Lincosamides | 
              | Lindane | 
              | Lindau Disease use von Hippel-Lindau Disease | 
              | Linden use Tilia | 
              | Lindera | 
              | LINE-1 Elements use Long Interspersed Nucleotide Elements | 
              | Linear Accelerator Radiosurgery use Radiosurgery | 
              | Linear Accelerators use Particle Accelerators | 
              | Linear Energy Transfer | 
              | Linear Models | 
              | Linear Regression use Linear Models | 
              | Linear Skull Fracture use Skull Fractures | 
              | Linens use Bedding and Linens | 
              | Lingonberry use Vaccinium vitis-idaea | 
              | Lingual Bone use Hyoid Bone | 
              | Lingual Frenum | 
              | Lingual Goiter | 
              | Lingual Nerve | 
              | Lingual Thyroid | 
              | Lingual-Facial-Buccal Dyskinesia use Movement Disorders | 
              | Linguistics | 
              | Liniments | 
              | Linings | 
              | Linitis Plastica | 
              | Linkage (Genetics) | 
              | Linkage Disequilibrium | 
              | Linkage Mapping use Chromosome Mapping | 
              | Linker-Insertion Mutagenesis use Mutagenesis, Insertional | 
              | Linognathus use Anoplura | 
              | Linoleate use Linoleic Acid | 
              | Linoleic Acid | 
              | Linoleic Acids | 
              | Linoleic Acids, Conjugated | 
              | Linolenic Acid use alpha-Linolenic Acid | 
              | Linolenic Acids | 
              | Linoleoyl-CoA Desaturase | 
              | Linseed use Flax | 
              | Linseed Oil | 
              | Linum use Flax | 
              | Linum catharticum | 
              | Linum usitatissimum | 
              | Linuron | 
              | Lions | 
              | Liothyronine use Triiodothyronine | 
              | Lip | 
              | Lip Cancer use Lip Neoplasms | 
              | Lip Diseases | 
              | Lip Neoplasms | 
              | Lip Piercing use Body Piercing | 
              | Lip Products | 
              | Lip Protectors use Lip Products | 
              | Lip Shine use Lip Products | 
              | Lipase | 
              | Lipectomy | 
              | Lipemia-Clearing Factor use Lipoprotein Lipase | 
              | Lipid A | 
              | Lipid Bilayers | 
              | Lipid Emulsions, Intravenous use Fat Emulsions, Intravenous | 
              | Lipid Metabolism | 
              | Lipid Metabolism Disorders | 
              | Lipid Metabolism, Inborn Errors | 
              | Lipid Mobilization | 
              | Lipid Peroxidation | 
              | Lipid Peroxides | 
              | Lipid Rafts, Cell Membrane use Membrane Microdomains | 
              | Lipidoses | 
              | Lipidosis use Lipidoses | 
              | Lipids | 
              | Lipliner use Lip Products | 
              | Lipoamide Dehydrogenase use Dihydrolipoamide Dehydrogenase | 
              | Lipocalin 1 | 
              | Lipocalins | 
              | Lipochondrodystrophy use Mucopolysaccharidosis I | 
              | Lipocortin I use Annexin A1 | 
              | Lipocortin II use Annexin A2 | 
              | Lipocortin III use Annexin A3 | 
              | Lipocortin IV use Annexin A4 | 
              | Lipocortin VI use Annexin A6 | 
              | Lipocortins use Annexins | 
              | Lipodystrophy | 
              | Lipodystrophy, Congenital Generalized | 
              | Lipodystrophy, Familial Partial | 
              | Lipodystrophy, Intestinal use Whipple Disease | 
              | Lipofuscin | 
              | Lipogenesis | 
              | Lipoic Acid use Thioctic Acid | 
              | Lipoid Proteinosis of Urbach and Wiethe | 
              | Lipoidosis use Lipidoses | 
              | Lipolysis | 
              | Lipolysis, Suction use Lipectomy | 
              | Lipoma | 
              | Lipoma, Pleomorphic use Lipoma | 
              | Lipomatosis | 
              | Lipomatosis, Multiple Symmetrical | 
              | Lipomucopolysaccharidosis use Mucolipidoses | 
              | Lipomyces | 
              | Lipopeptides | 
              | Lipopolysaccharide Receptors use Antigens, CD14 | 
              | Lipopolysaccharides | 
              | Lipoprotein Deficiency Disease, HDL, Familial use Hypoalphalipoproteinemias | 
              | Lipoprotein LDL Receptors use Receptors, LDL | 
              | Lipoprotein Lipase | 
              | Lipoprotein Lipase Deficiency, Familial use Hyperlipoproteinemia Type I | 
              | Lipoprotein Receptors use Receptors, Lipoprotein | 
              | Lipoprotein(a) | 
              | Lipoprotein-X | 
              | Lipoproteinosis use Lipoid Proteinosis of Urbach and Wiethe | 
              | Lipoproteins | 
              | Lipoproteins, HDL | 
              | Lipoproteins, HDL2 | 
              | Lipoproteins, HDL3 | 
              | Lipoproteins, IDL | 
              | Lipoproteins, LDL | 
              | Lipoproteins, VLDL | 
              | Liposarcoma | 
              | Liposarcoma, Dedifferentiated use Liposarcoma | 
              | Liposarcoma, Myxoid | 
              | Liposarcoma, Pleomorphic use Liposarcoma | 
              | Liposomes | 
              | Liposuction use Lipectomy | 
              | Lipothrixviridae | 
              | Lipotropic Agents | 
              | Lipotropic Factors use Lipotropic Agents | 
              | Lipotropin use beta-Lipotropin | 
              | Lipoxidase use Lipoxygenase | 
              | Lipoxin Receptors use Receptors, Lipoxin | 
              | Lipoxins | 
              | Lipoxygenase | 
              | Lipoxygenase Inhibitors | 
              | Lipoylation | 
              | Lippia | 
              | Lippia mexicana | 
              | Lippspringe Aqua | 
              | Lipreading | 
              | Lipsticks use Lip Products | 
              | Liquefaction | 
              | Liquid and Creamy Makeup Foundation use Products for Facial Makeup | 
              | Liquid Compounds Ready for Consumption | 
              | Liquid Crystals | 
              | Liquid Eyeliners use Products for Eye Areas | 
              | Liquid Paraffin use Mineral Oil | 
              | Liquid Ventilation | 
              | Liquidambar | 
              | Liriodendron | 
              | Liriope muscari use Liriope Plant | 
              | Liriope Plant | 
              | Liriope spicatum use Liriope Plant | 
              | Liriope tetraphylla use Hydrozoa | 
              | Lisinopril | 
              | Lissamine Green Dyes | 
              | Lissencephalies, Classical use Classical Lissencephalies and Subcortical Band Heterotopias | 
              | Lissencephaly | 
              | Lissencephaly Type 2 use Cobblestone Lissencephaly | 
              | Lissencephaly, Type 1 use Classical Lissencephalies and Subcortical Band Heterotopias | 
              | Lissencephaly, X-Linked use Classical Lissencephalies and Subcortical Band Heterotopias | 
              | Lissencephaly-Subcortical Band Heterotopia use Classical Lissencephalies and Subcortical Band Heterotopias | 
              | Lissodelphis use Dolphins | 
              | List of Tobacco-Derived Products | 
              | Listeria | 
              | Listeria Infections | 
              | Listeria monocytogenes | 
              | Listonella | 
              | Lisuride | 
              | Litchi | 
              | Literacy Programs use Education | 
              | Literature | 
              | Literature, Medieval | 
              | Literature, Modern | 
              | Lithiasis | 
              | Lithium | 
              | Lithium Bromatum | 
              | Lithium Carbonate | 
              | Lithium Carbonicum | 
              | Lithium Chloride | 
              | Lithium Compounds | 
              | Lithium Lacticum | 
              | Lithium Muriaticum | 
              | Lithium Salicylicum | 
              | Lithocholate use Lithocholic Acid | 
              | Lithocholic Acid | 
              | Lithocholyltaurine use Taurolithocholic Acid | 
              | Litholapaxy use Lithotripsy | 
              | Lithology | 
              | Lithospermum | 
              | Lithosphere | 
              | Lithostathine | 
              | Lithotripsy | 
              | Lithotripsy, Laser | 
              | Lithrea use Anacardiaceae | 
              | Lithuania | 
              | Litigation use Jurisprudence | 
              | Litomosoides use Filarioidea | 
              | Litoral use Coasts | 
              | Litoral Pollution use Coastal Pollution | 
              | Litsea | 
              | Litter Bins use Solid Waste Recipients | 
              | Litter Size | 
              | Little Disease use Cerebral Palsy | 
              | Littoral Zone use Intertidal Zone | 
              | Live Birth | 
              | Live Birth Certificate use Birth Certificates | 
              | Live Births use Live Birth | 
              | Liveborn use Live Birth | 
              | Livedo Reticularis | 
              | Livedo Reticularis, Systemic Involvement use Sneddon Syndrome | 
              | Liver | 
              | Liver Abscess | 
              | Liver Abscess, Amebic | 
              | Liver Abscess, Pyogenic | 
              | Liver Cancer use Liver Neoplasms | 
              | Liver Cell Adhesion Molecules use Cadherins | 
              | Liver Circulation | 
              | Liver Cirrhosis | 
              | Liver Cirrhosis, Alcoholic | 
              | Liver Cirrhosis, Biliary | 
              | Liver Cirrhosis, Experimental | 
              | Liver Cirrhosis, Obstructive use Liver Cirrhosis, Biliary | 
              | Liver Diseases | 
              | Liver Diseases, Alcoholic | 
              | Liver Diseases, Parasitic | 
              | Liver Extracts | 
              | Liver Failure | 
              | Liver Failure, Acute | 
              | Liver Failure, Fulminant use Liver Failure, Acute | 
              | Liver Fibrosis use Liver Cirrhosis | 
              | Liver Fluke use Fasciola hepatica | 
              | Liver Function Tests | 
              | Liver Glycogen | 
              | Liver Microsomes use Microsomes, Liver | 
              | Liver Mitochondria use Mitochondria, Liver | 
              | Liver Neoplasms | 
              | Liver Neoplasms, Experimental | 
              | Liver Regeneration | 
              | Liver Transplantation | 
              | Liver, Artificial | 
              | Liverworts use Hepatophyta | 
              | Livestock use Animals, Domestic | 
              | Livestock Industry | 
              | Livestock Production use Livestock Industry | 
              | Livestock Raising use Livestock Industry | 
              | Living Conditions use Social Conditions | 
              | Living Donors | 
              | Living Wills | 
              | Livor Mortis use Postmortem Changes | 
              | Lixiviated use Percolating Liquid | 
              | Lixiviation use Percolation | 
              | Lizards | 
              | Ljungan Virus use Parechovirus | 
              | Llamas use Camelids, New World | 
              | LLC-PK1 Cells | 
              | LLLT use Laser Therapy, Low-Level | 
              | LMWH use Heparin, Low-Molecular-Weight | 
              | Loa | 
              | Loa loa use Loa | 
              | Loaches use Cypriniformes | 
              | Load-Bearing use Weight-Bearing | 
              | Loaiasis use Loiasis | 
              | Loasa tricolor | 
              | Lobar Atrophy (Brain) use Pick Disease of the Brain | 
              | Lobar Holoprosencephaly use Holoprosencephaly | 
              | Lobar Pneumonia use Pneumonia | 
              | Lobbying | 
              | Lobelia | 
              | Lobelia acetum | 
              | Lobelia cardinalis | 
              | Lobelia coerulea use Lobelia syphilitica | 
              | Lobelia dortmanna | 
              | Lobelia erinus | 
              | Lobelia inflata | 
              | Lobelia purpurascens | 
              | Lobelia syphilitica | 
              | Lobeline | 
              | Lobelinum | 
              | Loblolly Pine use Pinus taeda | 
              | Lobopodia use Pseudopodia | 
              | Lobosea | 
              | Lobotomy use Psychosurgery | 
              | Lobstein Disease use Osteogenesis Imperfecta | 
              | Lobsters, Clawed use Nephropidae | 
              | Lobsters, Spiny use Palinuridae | 
              | Local Area Networks | 
              | Local Building Material | 
              | Local Committees for Emergencies | 
              | Local Development | 
              | Local Disease | 
              | Local Government | 
              | Local Health Systems | 
              | Local Lymph Node Assay | 
              | Local Resources Uses | 
              | Local Strategies | 
              | Localization use Site Selection | 
              | Location use Site Selection | 
              | Location Directories and Signs | 
              | Locked-In Syndrome use Quadriplegia | 
              | Lockjaw use Trismus | 
              | Locomotion | 
              | Locomotion, Cell use Cell Movement | 
              | Locomotor Activity use Motor Activity | 
              | Locomotor Ataxia use Tabes Dorsalis | 
              | Locoweed, White use Oxytropis | 
              | Locus Coeruleus | 
              | Locus Control Region | 
              | Locus of Control use Internal-External Control | 
              | Locust Tree use Acacia | 
              | Locust, Black use Robinia | 
              | Locusta migratoria | 
              | Locusts use Grasshoppers | 
              | Lod Score | 
              | Lodged | 
              | Lodging use Sheltering | 
              | Loeffler Syndrome use Pulmonary Eosinophilia | 
              | Loeffler's Endocarditis use Hypereosinophilic Syndrome | 
              | Lofepramine | 
              | Log-Linear Models use Linear Models | 
              | Loganiaceae | 
              | Logic | 
              | Logic, Fuzzy use Fuzzy Logic | 
              | Logical Observation Identifiers Names and Codes | 
              | Logistic Models | 
              | Logistic Regression use Logistic Models | 
              | Logistics | 
              | Logit Models use Logistic Models | 
              | LOH use Loss of Heterozygosity | 
              | Loiasis | 
              | LOINC use Logical Observation Identifiers Names and Codes | 
              | Loligo | 
              | Lolium | 
              | Lolium temulentum | 
              | Loma | 
              | Lomustine | 
              | Lon Protease use Protease La | 
              | London | 
              | Loneliness | 
              | Long Interspersed DNA Sequence Elements use Long Interspersed Nucleotide Elements | 
              | Long Interspersed Nucleotide Elements | 
              | Long QT Syndrome | 
              | Long QT Syndrome 1 use Romano-Ward Syndrome | 
              | Long Terminal Repeat use Terminal Repeat Sequences | 
              | Long Terminal Repeat, HIV use HIV Long Terminal Repeat | 
              | Long-Acting Thyroid Stimulator | 
              | Long-Chain Acyl CoA use Acyl Coenzyme A | 
              | Long-Chain-Acyl-CoA Dehydrogenase use Acyl-CoA Dehydrogenase, Long-Chain | 
              | Long-Evans Cinnamon Rats use Rats, Inbred LEC | 
              | Long-Lasting Calcium Channels use Calcium Channels, L-Type | 
              | Long-Nosed Potoroo use Potoroidae | 
              | Long-Nosed Rat Kangaroo use Potoroidae | 
              | Long-Term Care | 
              | Long-Term Care Insurance use Insurance, Long-Term Care | 
              | Long-term Effect | 
              | Long-Term Potentiation | 
              | Long-Term Survivors use Survivors | 
              | Long-Term Survivors, HIV use HIV Long-Term Survivors | 
              | Long-Term Synaptic Depression | 
              | Longevity | 
              | Longitude use Geographic Longitude | 
              | Longitudinal Ligaments | 
              | Longitudinal Studies | 
              | Longitudinal Wave use p Wave | 
              | Lonicera | 
              | Lonicera caprifolium | 
              | Lonicera pericylmenum | 
              | Lonicera xylosteum | 
              | Lontra use Otters | 
              | Loofah use Luffa | 
              | Loop Ileostomy use Ileostomy | 
              | Loop of Henle | 
              | Loose Bodies, Joint use Joint Loose Bodies | 
              | Loosestrife use Lythrum | 
              | Loperamide | 
              | Lophocebus use Cercocebus | 
              | Lophophora williamsii use Anhalonium lewinii | 
              | Lopramine use Lofepramine | 
              | Loquat Tree use Eriobotrya | 
              | Loquats use Eriobotrya | 
              | Lorajmine use Ajmaline | 
              | Loranthaceae | 
              | Loratadine | 
              | Lorazepam | 
              | Lordosis | 
              | Loris, Slow use Lorisidae | 
              | Lorisidae | 
              | Lorr's Inpatient Multidimensional Psychiatric Rating Scale use Psychiatric Status Rating Scales | 
              | Los Angeles | 
              | Losartan | 
              | Loss of Heterozygosity | 
              | Lot Quality Assurance Sampling | 
              | Lotions for the Eye Area use Products for Eye Areas | 
              | Lotus | 
              | Lou Gehrig Disease use Amyotrophic Lateral Sclerosis | 
              | Loudness Perception | 
              | Loudness Recruitment use Hyperacusis | 
              | Loudness Recruitment Detection use Recruitment Detection, Audiologic | 
              | Louis-Bar Syndrome use Ataxia Telangiectasia | 
              | Louisiana | 
              | Louping Ill | 
              | Louping ill virus use Encephalitis Viruses, Tick-Borne | 
              | Lovage use Levisticum | 
              | Lovage, Alpine use Ligusticum | 
              | Lovastatin | 
              | Love | 
              | Love and Raleigh Waves use Surface Waves | 
              | Love Waves use Surface Waves | 
              | Lovebirds use Agapornis | 
              | Low Back Pain | 
              | Low Calorie Drinks use Dietetic Beverages | 
              | Low Cardiac Output use Cardiac Output, Low | 
              | Low Cardiac Output Syndrome use Cardiac Output, Low | 
              | Low Cost use Low Cost Technology | 
              | Low Cost Technology | 
              | Low Density Lipoprotein-Related Proteins use LDL-Receptor Related Proteins | 
              | Low Gravity use Hypogravity | 
              | Low Molecular Weight Nuclear RNA use RNA, Small Nuclear | 
              | Low Potencies | 
              | Low Pressure | 
              | Low Sperm Count use Oligospermia | 
              | Low T3 Syndrome use Euthyroid Sick Syndromes | 
              | Low-Cost Housing | 
              | Low-Cost Sewerage use Simplified Sewerage | 
              | Low-Density Lipoprotein Receptor-Related Protein-2 use LDL-Receptor Related Protein 2 | 
              | Low-Density Lipoproteins use Lipoproteins, LDL | 
              | Low-Income Population use Poverty | 
              | Low-Molecular-Weight Heparin use Heparin, Low-Molecular-Weight | 
              | Low-Molecular-Weight Kininogen use Kininogen, Low-Molecular-Weight | 
              | Low-Protein Diet use Diet, Protein-Restricted | 
              | Lowe Syndrome use Oculocerebrorenal Syndrome | 
              | Lower Body Negative Pressure | 
              | Lower Esophageal Sphincter use Esophageal Sphincter, Lower | 
              | Lower Extremity | 
              | Lower Extremity Deformities, Congenital | 
              | Lower Gastrointestinal Tract | 
              | Lower Jaw use Mandible | 
              | Lower Limb Deformities, Congenital use Lower Extremity Deformities, Congenital | 
              | Lower Nephron Nephrosis use Kidney Tubular Necrosis, Acute | 
              | Lown-Ganong-Levine Syndrome | 
              | Loxapine | 
              | Loxapinsuccinate use Loxapine | 
              | LSD use Lysergic Acid Diethylamide | 
              | LST-1 Transport Protein use Organic Anion Transport Polypeptide C | 
              | LTA4 use Leukotriene A4 | 
              | LTB4 use Leukotriene B4 | 
              | LTB4 Receptors use Receptors, Leukotriene B4 | 
              | LTC4 use Leukotriene C4 | 
              | LTD4 use Leukotriene D4 | 
              | LTE4 use Leukotriene E4 | 
              | Lubricant use Lubricants | 
              | Lubricant Oils | 
              | Lubricants | 
              | Lubrication | 
              | Lucanthone | 
              | Lucensomycin | 
              | Lucerne use Medicago sativa | 
              | Luciferase use Luciferases | 
              | Luciferases | 
              | Luciferases, Bacterial | 
              | Luciferases, Firefly | 
              | Luciferases, Renilla | 
              | Lucimycin use Lucensomycin | 
              | Lucke Tumor Virus use Herpesvirus 1, Ranid | 
              | Ludwig's Angina | 
              | Ludwigia use Onagraceae | 
              | Luetism use Syphilinism | 
              | Luffa | 
              | Luffa actangula | 
              | Luffa operculata | 
              | Luffa purgans use Luffa operculata | 
              | Luliberin use Gonadotropin-Releasing Hormone | 
              | Luliberin Receptors use Receptors, LHRH | 
              | Lumbago use Low Back Pain | 
              | Lumbar Manipulation use Manipulation, Spinal | 
              | Lumbar Osteoarthritis use Osteoarthritis, Spine | 
              | Lumbar Plexus use Lumbosacral Plexus | 
              | Lumbar Puncture use Spinal Puncture | 
              | Lumbar Region use Lumbosacral Region | 
              | Lumbar Vertebrae | 
              | Lumbarsacral Spondylosis use Spondylosis | 
              | Lumber Industry | 
              | Lumbosacral Plexus | 
              | Lumbosacral Region | 
              | Lumbricus use Oligochaeta | 
              | Lumbricus terrestris use Oligochaeta | 
              | Lumicolchicines | 
              | Luminescence | 
              | Luminescence, Physical use Luminescence | 
              | Luminescent Agents | 
              | Luminescent Measurements | 
              | Luminescent Proteins | 
              | Luminol | 
              | Lumpectomy use Mastectomy, Segmental | 
              | Lumpy Skin Disease | 
              | Lumpy skin disease virus | 
              | Lunar Cycle use Moon | 
              | Lunar Phases use Moon | 
              | Lunate Bone | 
              | Lundborg-Unverricht Syndrome use Unverricht-Lundborg Syndrome | 
              | Lung | 
              | Lung Abscess | 
              | Lung Cancer use Lung Neoplasms | 
              | Lung Capacities use Lung Volume Measurements | 
              | Lung Capacity, Total use Total Lung Capacity | 
              | Lung Collapse use Pulmonary Atelectasis | 
              | Lung Compliance | 
              | Lung Diseases | 
              | Lung Diseases, Fungal | 
              | Lung Diseases, Interstitial | 
              | Lung Diseases, Obstructive | 
              | Lung Diseases, Parasitic | 
              | Lung Function Tests use Respiratory Function Tests | 
              | Lung Inflammation use Pneumonia | 
              | Lung Injury | 
              | Lung Injury, Acute use Acute Lung Injury | 
              | Lung Lavage use Bronchoalveolar Lavage | 
              | Lung Lavage Fluid use Bronchoalveolar Lavage Fluid | 
              | Lung Neoplasms | 
              | Lung Sounds use Respiratory Sounds | 
              | Lung Transplantation | 
              | Lung Volume Measurements | 
              | Lung Volume Reduction use Pneumonectomy | 
              | Lung Water, Extravascular use Extravascular Lung Water | 
              | Lung, Hyperlucent | 
              | Lungwort use Pulmonaria | 
              | Lupine use Lupinus | 
              | Lupinus | 
              | Lupulinum | 
              | Lupulone use Lupulinum | 
              | Lupulus humulus | 
              | Lupus Anticoagulant use Lupus Coagulation Inhibitor | 
              | Lupus Coagulation Inhibitor | 
              | Lupus Erythematosus Disseminatus use Lupus Erythematosus, Systemic | 
              | Lupus Erythematosus Profundus use Panniculitis, Lupus Erythematosus | 
              | Lupus Erythematosus, Chronic Cutaneous use Lupus Erythematosus, Discoid | 
              | Lupus Erythematosus, Cutaneous | 
              | Lupus Erythematosus, Cutaneous, Chronic use Lupus Erythematosus, Discoid | 
              | Lupus Erythematosus, Cutaneous, Subacute use Lupus Erythematosus, Cutaneous | 
              | Lupus Erythematosus, Discoid | 
              | Lupus Erythematosus, Subacute Cutaneous use Lupus Erythematosus, Cutaneous | 
              | Lupus Erythematosus, Systemic | 
              | Lupus Glomerulonephritis use Lupus Nephritis | 
              | Lupus Nephritis | 
              | Lupus Panniculitis use Panniculitis, Lupus Erythematosus | 
              | Lupus Vasculitis, Central Nervous System | 
              | Lupus Vulgaris | 
              | Lurcher Mice use Mice, Neurologic Mutants | 
              | Luria-Nebraska Neuropsychological Battery | 
              | Luteal Cells | 
              | Luteal Maintenance use Corpus Luteum Maintenance | 
              | Luteal Phase | 
              | Luteal Regression use Luteolysis | 
              | Lutein | 
              | Lutein Cells use Luteal Cells | 
              | Luteinization | 
              | Luteinizing Hormone | 
              | Luteinizing Hormone Receptors use Receptors, LH | 
              | Luteinizing Hormone, alpha Subunit use Glycoprotein Hormones, alpha Subunit | 
              | Luteinizing Hormone, beta Subunit | 
              | Luteinizing Hormone, Inappropriate Secretion use Hyperpituitarism | 
              | Luteinizing Hormone-Releasing Hormone use Gonadotropin-Releasing Hormone | 
              | Lutembacher Syndrome | 
              | Luteolin | 
              | Luteolysis | 
              | Luteolytic Agents | 
              | Luteoma | 
              | Luteoviridae | 
              | Luteovirus | 
              | Lutetium | 
              | Lutheran Blood-Group System | 
              | Luting Agents use Dental Cements | 
              | Lutra use Otters | 
              | Lutropin use Luteinizing Hormone | 
              | Lutropin Receptors use Receptors, LH | 
              | Lutropin, beta Subunit use Luteinizing Hormone, beta Subunit | 
              | Lutzomyia use Psychodidae | 
              | Luxembourg | 
              | Ly Antigens use Antigens, Ly | 
              | Lyases | 
              | Lychee use Litchi | 
              | Lychnis | 
              | Lychnis githago use Agrostemma githago | 
              | Lychnophora use Asteraceae | 
              | Lycine use Betaine | 
              | Lycium | 
              | Lycopersicon esculentum | 
              | Lycopodiaceae | 
              | Lycopodium | 
              | Lycopodium clavatum | 
              | Lycopus | 
              | Lycopus europaeus | 
              | Lycopus virginicus | 
              | Lycoremine use Galantamine | 
              | Lycoris | 
              | Lye | 
              | Lyell's Syndrome use Epidermal Necrolysis, Toxic | 
              | Lying use Deception | 
              | Lyme Borreliosis use Lyme Disease | 
              | Lyme Disease | 
              | Lyme Disease Spirochete use Borrelia burgdorferi | 
              | Lyme Disease Vaccines | 
              | Lyme Neuroborreliosis | 
              | Lymecycline | 
              | Lymnaea | 
              | Lymph | 
              | Lymph Node Biopsy, Sentinel use Sentinel Lymph Node Biopsy | 
              | Lymph Node Dissection use Lymph Node Excision | 
              | Lymph Node Excision | 
              | Lymph Node Hyperplasia, Giant use Giant Lymph Node Hyperplasia | 
              | Lymph Node Syndrome, Mucocutaneous use Mucocutaneous Lymph Node Syndrome | 
              | Lymph Nodes | 
              | Lymphadenectomy use Lymph Node Excision | 
              | Lymphadenitis | 
              | Lymphadenitis, Histiocytic Necrotizing use Histiocytic Necrotizing Lymphadenitis | 
              | Lymphadenitis, Tuberculous use Tuberculosis, Lymph Node | 
              | Lymphadenopathy use Lymphatic Diseases | 
              | Lymphadenopathy Syndrome use AIDS-Related Complex | 
              | Lymphadenopathy, Immunoblastic use Immunoblastic Lymphadenopathy | 
              | Lymphadenopathy-Associated Antibodies use HIV Antibodies | 
              | Lymphadenopathy-Associated Antigens use HIV Antigens | 
              | Lymphadenopathy-Associated Virus use HIV | 
              | Lymphangiectasis | 
              | Lymphangiectasis, Intestinal | 
              | Lymphangioendothelioma use Lymphangioma | 
              | Lymphangioendothelioma, Malignant use Lymphangiosarcoma | 
              | Lymphangiogenesis | 
              | Lymphangiography use Lymphography | 
              | Lymphangioleiomyoma use Lymphangiomyoma | 
              | Lymphangioleiomyomatosis | 
              | Lymphangioma | 
              | Lymphangioma, Cavernous use Lymphangioma | 
              | Lymphangioma, Cystic | 
              | Lymphangiomyoma | 
              | Lymphangiosarcoma | 
              | Lymphangitis | 
              | Lymphapheresis use Leukapheresis | 
              | Lymphatic Abnormalities | 
              | Lymphatic Capillaries use Lymphatic Vessels | 
              | Lymphatic Cyst use Lymphocele | 
              | Lymphatic Diseases | 
              | Lymphatic Endothelium use Endothelium, Lymphatic | 
              | Lymphatic Filariasis use Elephantiasis, Filarial | 
              | Lymphatic Irradiation | 
              | Lymphatic Metastasis | 
              | Lymphatic Radiation Therapy use Lymphatic Irradiation | 
              | Lymphatic Stomata use Peritoneal Stomata | 
              | Lymphatic System | 
              | Lymphatic Temperament use Temperament | 
              | Lymphatic Venules use Lymphatic Vessels | 
              | Lymphatic Vessel Tumors | 
              | Lymphatic Vessels | 
              | Lymphatism use Lymphatic Diseases | 
              | Lymphedema | 
              | Lymphoblast Transformation use Lymphocyte Activation | 
              | Lymphoblastic Leukemia use Precursor Cell Lymphoblastic Leukemia-Lymphoma | 
              | Lymphoblastic Leukemia, Acute, T-Cell use Precursor T-Cell Lymphoblastic Leukemia-Lymphoma | 
              | Lymphoblastic Lymphoma use Precursor Cell Lymphoblastic Leukemia-Lymphoma | 
              | Lymphocele | 
              | Lymphocryptovirus | 
              | Lymphocystivirus use Iridoviridae | 
              | Lymphocytapheresis use Leukapheresis | 
              | Lymphocyte Activation | 
              | Lymphocyte Antigen 96 | 
              | Lymphocyte Chemoattractant Factor use Interleukin-16 | 
              | Lymphocyte Cooperation | 
              | Lymphocyte Count | 
              | Lymphocyte Count, CD4 use CD4 Lymphocyte Count | 
              | Lymphocyte Culture Test, Mixed | 
              | Lymphocyte Depletion | 
              | Lymphocyte Function Associated Antigen-3 use Antigens, CD58 | 
              | Lymphocyte Function-Associated Antigen-1 | 
              | Lymphocyte Homing Receptors use Receptors, Lymphocyte Homing | 
              | Lymphocyte Immunophenotyping use Immunophenotyping | 
              | Lymphocyte Mediators use Lymphokines | 
              | Lymphocyte Mitogenic Factor use Interleukin-2 | 
              | Lymphocyte Pore-Forming Protein use Perforin | 
              | Lymphocyte Specific Protein Tyrosine Kinase p56(lck) | 
              | Lymphocyte Stimulation use Lymphocyte Activation | 
              | Lymphocyte Stimulatory Antigens, Minor use Minor Lymphocyte Stimulatory Antigens | 
              | Lymphocyte Stimulatory Loci, Minor use Minor Lymphocyte Stimulatory Loci | 
              | Lymphocyte Subpopulations use Lymphocyte Subsets | 
              | Lymphocyte Subsets | 
              | Lymphocyte Subtyping use Immunophenotyping | 
              | Lymphocyte Transformation use Lymphocyte Activation | 
              | Lymphocyte Transfusion | 
              | Lymphocyte-Activating Determinants use Minor Lymphocyte Stimulatory Antigens | 
              | Lymphocyte-Activating Factor use Interleukin-1 | 
              | Lymphocytes | 
              | Lymphocytes, Null | 
              | Lymphocytes, Tumor-Infiltrating | 
              | Lymphocytic Choriomeningitis | 
              | Lymphocytic choriomeningitis virus | 
              | Lymphocytic Leukemia use Leukemia, Lymphoid | 
              | Lymphocytic Leukemia, Acute use Precursor Cell Lymphoblastic Leukemia-Lymphoma | 
              | Lymphocytic Leukemia, Acute, B- and T-Cell use Leukemia, Biphenotypic, Acute | 
              | Lymphocytic Leukemia, B-Cell use Leukemia, B-Cell | 
              | Lymphocytic Leukemia, Chronic, B-Cell use Leukemia, Lymphocytic, Chronic, B-Cell | 
              | Lymphocytic Leukemia, T-Cell use Leukemia, T-Cell | 
              | Lymphocytic Leukemia, T-Cell, Acute use Precursor T-Cell Lymphoblastic Leukemia-Lymphoma | 
              | Lymphocytic Lymphoma, Diffuse, Poorly-Differentiated use Lymphoma, Mantle-Cell | 
              | Lymphocytoma use Pseudolymphoma | 
              | Lymphocytopenia use Lymphopenia | 
              | Lymphocytosis | 
              | Lymphocytotoxic Antibodies use Antilymphocyte Serum | 
              | Lymphogranuloma Inguinale use Lymphogranuloma Venereum | 
              | Lymphogranuloma Venereum | 
              | Lymphogranuloma, Malignant use Hodgkin Disease | 
              | Lymphography | 
              | Lymphohistiocytosis, Hemophagocytic | 
              | Lymphoid Cells use Lymphocytes | 
              | Lymphoid Enhancer-Binding Factor 1 | 
              | Lymphoid Hyperplasia, Reactive use Pseudolymphoma | 
              | Lymphoid Irradiation use Lymphatic Irradiation | 
              | Lymphoid Leukemia use Leukemia, Lymphoid | 
              | Lymphoid Progenitor Cells | 
              | Lymphoid Tissue | 
              | Lymphokine-Activated Killer Cells use Killer Cells, Lymphokine-Activated | 
              | Lymphokines | 
              | Lymphoma | 
              | Lymphoma L5178 use Leukemia L5178 | 
              | Lymphoma, AIDS-Related | 
              | Lymphoma, B-Cell | 
              | Lymphoma, B-Cell, Marginal Zone | 
              | Lymphoma, Bovine use Enzootic Bovine Leukosis | 
              | Lymphoma, Burkitt use Burkitt Lymphoma | 
              | Lymphoma, Centrocytic Small-Cell use Lymphoma, Mantle-Cell | 
              | Lymphoma, Extranodal NK-T-Cell | 
              | Lymphoma, Follicular | 
              | Lymphoma, Giant Follicular use Lymphoma, Follicular | 
              | Lymphoma, Histiocytic, Diffuse use Lymphoma, Large B-Cell, Diffuse | 
              | Lymphoma, HIV-Related use Lymphoma, AIDS-Related | 
              | Lymphoma, Immunoblastic, Large-Cell use Lymphoma, Large-Cell, Immunoblastic | 
              | Lymphoma, Large B-Cell, Diffuse | 
              | Lymphoma, Large-Cell, Anaplastic | 
              | Lymphoma, Large-Cell, Immunoblastic | 
              | Lymphoma, Large-Cell, Ki-1 use Lymphoma, Large-Cell, Anaplastic | 
              | Lymphoma, Lymphoblastic use Precursor Cell Lymphoblastic Leukemia-Lymphoma | 
              | Lymphoma, Lymphocytic, Diffuse, Intermediate Differentiated use Lymphoma, Mantle-Cell | 
              | Lymphoma, Lymphocytic, Diffuse, Poorly-Differentiated use Lymphoma, Mantle-Cell | 
              | Lymphoma, Lymphocytic, Intermediate use Lymphoma, Mantle-Cell | 
              | Lymphoma, Lymphoplasmacytoid use Waldenstrom Macroglobulinemia | 
              | Lymphoma, Malignant use Lymphoma | 
              | Lymphoma, Mantle-Cell | 
              | Lymphoma, Mediterranean use Immunoproliferative Small Intestinal Disease | 
              | Lymphoma, Mucosa-Associated Lymphoid Tissue use Lymphoma, B-Cell, Marginal Zone | 
              | Lymphoma, Nodular use Lymphoma, Follicular | 
              | Lymphoma, Non-Hodgkin | 
              | Lymphoma, Primary Cutaneous Anaplastic Large Cell | 
              | Lymphoma, Primary Effusion | 
              | Lymphoma, Small Lymphocytic use Leukemia, Lymphocytic, Chronic, B-Cell | 
              | Lymphoma, Small-Cell, Centrocytic use Lymphoma, Mantle-Cell | 
              | Lymphoma, T-Cell | 
              | Lymphoma, T-Cell, Cutaneous | 
              | Lymphoma, T-Cell, Peripheral | 
              | Lymphomatoid Granulomatosis | 
              | Lymphomatoid Papulosis | 
              | Lymphomatosis Virus, Avian use Avian leukosis virus | 
              | Lymphopenia | 
              | Lymphopoiesis | 
              | Lymphoproliferative Disorders | 
              | Lymphoproliferative Viruses use Gammaherpesvirinae | 
              | Lymphosarcoma, Bovine use Enzootic Bovine Leukosis | 
              | Lymphotoxin alpha1, beta2 Heterotrimer | 
              | Lymphotoxin beta use Lymphotoxin-beta | 
              | Lymphotoxin beta Receptor | 
              | Lymphotoxin-alpha | 
              | Lymphotoxin-beta | 
              | Lynch Syndrome use Colorectal Neoplasms, Hereditary Nonpolyposis | 
              | Lynch Syndrome II | 
              | Lynestrenol | 
              | Lyngbya Toxins | 
              | Lynx | 
              | Lyophilization use Freeze Drying | 
              | Lypressin use Lysine Vasopressin | 
              | Lysergic Acid | 
              | Lysergic Acid Diethylamide | 
              | Lysergide use Lysergic Acid Diethylamide | 
              | Lysichiton use Araceae | 
              | Lysimachia use Primulaceae | 
              | Lysimachia nummularia | 
              | Lysine | 
              | Lysine 2-Oxoglutarate Dioxygenase use Procollagen-Lysine, 2-Oxoglutarate 5-Dioxygenase | 
              | Lysine alpha-Ketoglutarate Reductase Deficiency Disease use Hyperlysinemias | 
              | Lysine Carboxypeptidase | 
              | Lysine Hydroxylase use Procollagen-Lysine, 2-Oxoglutarate 5-Dioxygenase | 
              | Lysine Vasopressin | 
              | Lysine-Specific tRNA use RNA, Transfer, Lys | 
              | Lysine-tRNA Ligase | 
              | Lysinoalanine | 
              | Lysobacter | 
              | Lysogeny | 
              | Lysolecithin Acyltransferase use 1-Acylglycerophosphocholine O-Acyltransferase | 
              | Lysolecithinase use Lysophospholipase | 
              | Lysolecithins use Lysophosphatidylcholines | 
              | Lysophosphatidic Acid Receptor use Receptors, Lysophosphatidic Acid | 
              | Lysophosphatidic Acid Receptors use Receptors, Lysophosphatidic Acid | 
              | Lysophosphatidic Acids use Lysophospholipids | 
              | Lysophosphatidylcholines | 
              | Lysophospholipase | 
              | Lysophospholipid Receptors use Receptors, Lysophospholipid | 
              | Lysophospholipids | 
              | Lysosomal alpha-1,4-Glucosidase Deficiency Disease use Glycogen Storage Disease Type II | 
              | Lysosomal alpha-Glucosidase use alpha-Glucosidases | 
              | Lysosomal alpha-Mannosidase use alpha-Mannosidase | 
              | Lysosomal Elastase use Leukocyte Elastase | 
              | Lysosomal Enzyme Disorders use Lysosomal Storage Diseases | 
              | Lysosomal Membrane Proteins use Lysosome-Associated Membrane Glycoproteins | 
              | Lysosomal Protective Protein use Carboxypeptidase C | 
              | Lysosomal Storage Diseases | 
              | Lysosomal Storage Diseases, Nervous System | 
              | Lysosomal-Associated Membrane Protein 1 | 
              | Lysosomal-Associated Membrane Protein 2 | 
              | Lysosome-Associated Membrane Glycoproteins | 
              | Lysosomes | 
              | Lysosphingolipid Receptors use Receptors, Lysosphingolipid | 
              | Lysosphingolipids use Sphingolipids | 
              | Lysostaphin | 
              | Lysozyme use Muramidase | 
              | Lyssavirus | 
              | Lyssinum | 
              | Lysuride Hydrogen Maleate use Lisuride | 
              | Lysyl Bradykinin use Kallidin | 
              | Lysyl Oxidase use Protein-Lysine 6-Oxidase | 
              | Lysyl T RNA Synthetase use Lysine-tRNA Ligase | 
              | Lytechinus | 
              | Lythraceae | 
              | Lythrum | 
              | Lytta vesicatoria use Cantharis vesicatoria | 
              | Lyxulose use Xylulose |