| 804 | Animals |
| 364 | Humans |
| 294 | Male |
| 294 | Female |
| 212 | Phylogeny |
| 107 | France |
| 101 | Biological Evolution |
| 100 | Ecosystem |
| 86 | Species Specificity |
| 83 | Fossils |
| 75 | Biodiversity |
| 74 | Middle Aged |
| 60 | Sequence Analysis, DNA |
| 60 | Mice |
| 56 | Aged |
| 55 | Evolution, Molecular |
| 53 | Molecular Sequence Data |
| 52 | Time Factors |
| 52 | History, 18th Century |
| 48 | Adult |
| 47 | Animal Distribution |
| 46 | Europe |
| 45 | Birds |
| 43 | Conservation of Natural Resources |
| 41 | DNA, Mitochondrial |
| 39 | Models, Biological |
| 34 | Body Size |
| 34 | Animal Structures |
| 33 | Organ Size |
| 33 | Base Sequence |
| 32 | Plasmodium falciparum |
| 32 | Environmental Monitoring |
| 32 | Bayes Theorem |
| 30 | Treatment Outcome |
| 30 | Phenotype |
| 30 | Models, Genetic |
| 30 | Geography |
| 29 | Reproduction |
| 29 | Fishes |
| 28 | Seasons |
| 27 | Rats |
| 25 | Population Dynamics |
| 25 | Lizards |
| 24 | Natural History |
| 24 | Locomotion |
| 24 | Cyanobacteria |
| 24 | Arthropods |
| 23 | Water Pollutants, Chemical |
| 23 | History, Ancient |
| 23 | Genetic Variation |
| 22 | Wings, Animal |
| 22 | Ecology |
| 22 | Coleoptera |
| 22 | Biomechanical Phenomena |
| 21 | Sequence Alignment |
| 21 | Risk Factors |
| 21 | New Caledonia |
| 21 | Madagascar |
| 21 | Larva |
| 21 | History, 19th Century |
| 21 | Cell Line, Tumor |
| 20 | Hominidae |
| 20 | Cell Nucleus |
| 20 | Brazil |
| 20 | Antimalarials |
| 19 | Plants |
| 19 | Plant Extracts |
| 19 | Paleontology |
| 19 | Molecular Structure |
| 19 | Liver |
| 19 | Feeding Behavior |
| 19 | Environment |
| 19 | Classification |
| 19 | Bone and Bones |
| 19 | Archaeology |
| 18 | Tooth |
| 18 | Mammals |
| 18 | DNA |
| 17 | Temperature |
| 17 | Skull |
| 17 | Rodent Diseases |
| 17 | Oryzias |
| 17 | Likelihood Functions |
| 17 | Cell Line |
| 17 | Amino Acid Sequence |
| 16 | Prospective Studies |
| 16 | Microcystins |
| 15 | Trichostrongyloidea |
| 15 | Signal Transduction |
| 15 | Plant Leaves |
| 15 | Phylogeography |
| 15 | Myocardial Infarction |
| 15 | Intestinal Diseases, Parasitic |
| 15 | Indian Ocean |
| 15 | History, 20th Century |
| 15 | Geologic Sediments |
| 15 | Follow-Up Studies |
| 15 | Coronary Angiography |
| 15 | Butterflies |
| 15 | Animal Migration |
| 15 | Africa |
| 14 | Philosophy |
| 14 | Italy |
| 14 | Hybridization, Genetic |
| 14 | Hemiptera |
| 14 | Forests |
| 14 | Filarioidea |
| 14 | Dose-Response Relationship, Drug |
| 14 | Climate Change |
| 14 | Cell Proliferation |
| 14 | Biomarkers |
| 14 | Angioplasty, Balloon, Coronary |
| 13 | Trees |
| 13 | Selection, Genetic |
| 13 | Randomized Controlled Trials as Topic |
| 13 | RNA, Ribosomal, 16S |
| 13 | Population Density |
| 13 | Passeriformes |
| 13 | Insecta |
| 13 | Hydrolysis |
| 13 | Genetics, Population |
| 13 | Fish Diseases |
| 13 | Erythrocytes |
| 13 | Biology |
| 13 | Animal Shells |
| 12 | Water |
| 12 | Symbiosis |
| 12 | Ruminants |
| 12 | Retrospective Studies |
| 12 | Recurrence |
| 12 | Rats, Wistar |
| 12 | Proteomics |
| 12 | Prognosis |
| 12 | Mycorrhizae |
| 12 | Host-Parasite Interactions |
| 12 | Genetic Speciation |
| 12 | Gastropoda |
| 12 | Filariasis |
| 12 | Extinction, Biological |
| 12 | DNA, Ribosomal |
| 12 | Computer Simulation |
| 12 | Climate |
| 12 | Chiroptera |
| 12 | Cell Survival |
| 12 | Brain |
| 12 | Adolescent |
| 12 | Adenosine Triphosphatases |
| 11 | Vertebrates |
| 11 | Sciuridae |
| 11 | Rabbits |
| 11 | Muridae |
| 11 | Microscopy, Electron, Scanning |
| 11 | Mediterranean Sea |
| 11 | Magnetic Resonance Spectroscopy |
| 11 | Lakes |
| 11 | Kinetics |
| 11 | Intestines |
| 11 | Cerebral Hemorrhage |
| 11 | Cattle |
| 11 | Apoptosis |
| 11 | Altitude |
| 11 | Agriculture |
| 10 | Seeds |
| 10 | Reproducibility of Results |
| 10 | Protozoan Proteins |
| 10 | Prevalence |
| 10 | Predatory Behavior |
| 10 | Plants, Medicinal |
| 10 | Perciformes |
| 10 | Paris |
| 10 | Pacific Ocean |
| 10 | Morocco |
| 10 | Mollusca |
| 10 | Malaria |
| 10 | Life Cycle Stages |
| 10 | Islands |
| 10 | Fresh Water |
| 10 | French Guiana |
| 10 | Enzyme Inhibitors |
| 10 | Electrocardiography |
| 10 | Disease Models, Animal |
| 10 | Coronary Circulation |
| 10 | C-Reactive Protein |
| 10 | Breeding |
| 10 | Bivalvia |
| 10 | Bird Diseases |
| 10 | Bacteria |
| 10 | Asia |
| 10 | Adaptation, Physiological |
| 9 | Young Adult |
| 9 | Uterine Cervical Neoplasms |
| 9 | Swine |
| 9 | Sex Characteristics |
| 9 | Saccharomyces cerevisiae |
| 9 | Rivers |
| 9 | Risk Assessment |
| 9 | Recombinant Proteins |
| 9 | RNA, Ribosomal, 28S |
| 9 | Plasmodium |
| 9 | Pigmentation |
| 9 | Percutaneous Coronary Intervention |
| 9 | Oxidation-Reduction |
| 9 | Obesity |
| 9 | Nematoda |
| 9 | Mutation |
| 9 | Molecular Conformation |
| 9 | Models, Statistical |
| 9 | Mitochondria |
| 9 | Microscopy, Electron, Transmission |
| 9 | Mass Spectrometry |
| 9 | Marine Toxins |
| 9 | Magnoliopsida |
| 9 | Magnetic Resonance Imaging |
| 9 | Image Processing, Computer-Assisted |
| 9 | Gerbillinae |
| 9 | Genome |
| 9 | Genome, Mitochondrial |
| 9 | Flight, Animal |
| 9 | Fatty Acids |
| 9 | Embryo, Nonmammalian |
| 9 | Dogs |
| 9 | Diet |
| 9 | DNA Primers |
| 9 | Cytochromes b |
| 9 | Coronary Artery Disease |
| 9 | Chromatography, High Pressure Liquid |
| 9 | China |
| 9 | Cells, Cultured |
| 9 | Body Weight |
| 9 | Blood Pressure |
| 9 | Behavior, Animal |
| 9 | Antineoplastic Agents |
| 9 | Aging |
| 9 | Adenosine Triphosphate |
| 9 | Adaptation, Biological |
| 9 | Acute Coronary Syndrome |
| 8 | Vietnam |
| 8 | Urochordata |
| 8 | Tunisia |
| 8 | Tropical Climate |
| 8 | Trichostrongyloidiasis |
| 8 | Transcription, Genetic |
| 8 | Terminology as Topic |
| 8 | Tail |
| 8 | Structure-Activity Relationship |
| 8 | Spectrum Analysis, Raman |
| 8 | South America |
| 8 | Sequence Homology, Nucleic Acid |
| 8 | Scorpions |
| 8 | Saccharomyces cerevisiae Proteins |
| 8 | Rodentia |
| 8 | RNA, Ribosomal, 18S |
| 8 | RNA, Messenger |
| 8 | Principal Component Analysis |
| 8 | Polymerase Chain Reaction |
| 8 | Ovary |
| 8 | Nuclear Magnetic Resonance, Biomolecular |
| 8 | Nanocapsules |
| 8 | Models, Theoretical |
| 8 | Microbiota |
| 8 | Mice, Inbred C57BL |
| 8 | Intestine, Small |
| 8 | Inhibitory Concentration 50 |
| 8 | Inflammation |
| 8 | Imaging, Three-Dimensional |
| 8 | Hindlimb |
| 8 | Heligmosomatoidea |
| 8 | Genotype |
| 8 | Gait |
| 8 | Flowers |
| 8 | Escherichia coli |
| 8 | Electron Transport Complex IV |
| 8 | Drug Screening Assays, Antitumor |
| 8 | Diabetes Mellitus, Type 2 |
| 8 | Coronary Vessels |
| 8 | Carbon |
| 8 | Biomass |
| 8 | Aquatic Organisms |
| 8 | Animals, Domestic |
| 8 | Angina, Unstable |
| 8 | Aged, 80 and over |
| 8 | Age Factors |
| 8 | Acute Disease |
| 7 | Strongylida Infections |
| 7 | South Africa |
| 7 | Songbirds |
| 7 | Skin |
| 7 | Skin Neoplasms |
| 7 | Sheep |
| 7 | Radiometric Dating |
| 7 | Proteins |
| 7 | Posture |
| 7 | Platelet Aggregation Inhibitors |
| 7 | Plant Roots |
| 7 | Plant Proteins |
| 7 | Phytoplankton |
| 7 | Peru |
| 7 | Parasitic Sensitivity Tests |
| 7 | Oxidative Stress |
| 7 | Myocardial Ischemia |
| 7 | Muscle, Skeletal |
| 7 | Multivariate Analysis |
| 7 | Minerals |
| 7 | Microtubules |
| 7 | Mice, Inbred BALB C |
| 7 | Lipid Metabolism |
| 7 | Karyotyping |
| 7 | Introns |
| 7 | Immunohistochemistry |
| 7 | Hypothalamus |
| 7 | Hydrogen-Ion Concentration |
| 7 | Host Specificity |
| 7 | Horses |
| 7 | History, Modern 1601- |
| 7 | History, 21st Century |
| 7 | Histones |
| 7 | Head |
| 7 | HeLa Cells |
| 7 | Haplotypes |
| 7 | Genomics |
| 7 | Gene Expression |
| 7 | Gene Expression Regulation |
| 7 | Food Chain |
| 7 | Flavonoids |
| 7 | Energy Metabolism |
| 7 | Demography |
| 7 | Cohort Studies |
| 7 | Cluster Analysis |
| 7 | Carbon Isotopes |
| 7 | Australia |
| 7 | Arvicolinae |
| 7 | Antihypertensive Agents |
| 7 | Animals, Wild |
| 7 | Analysis of Variance |
| 7 | Adenosine |
| 6 | Ubiquitination |
| 6 | Tumor Cells, Cultured |
| 6 | Trichostrongylus |
| 6 | Trematoda |
| 6 | Tomography, X-Ray Computed |
| 6 | Tandem Mass Spectrometry |
| 6 | Surveys and Questionnaires |
| 6 | Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization |
| 6 | Spectrometry, Fluorescence |
| 6 | Soil |
| 6 | Soil Microbiology |
| 6 | Sexual Behavior, Animal |
| 6 | Sex Factors |
| 6 | Pyrophosphatases |
| 6 | Probability |
| 6 | Primates |
| 6 | Predictive Value of Tests |
| 6 | Polymorphism, Genetic |
| 6 | Polymers |
| 6 | Pollination |
| 6 | Platyhelminths |
| 6 | Photosynthesis |
| 6 | Phenols |
| 6 | Ovum |
| 6 | Outcome Assessment, Health Care |
| 6 | Myocardium |
| 6 | Museums |
| 6 | Murinae |
| 6 | Morphogenesis |
| 6 | Molar |
| 6 | Models, Molecular |
| 6 | Microsatellite Repeats |
| 6 | Mice, Knockout |
| 6 | Metals |
| 6 | Mediterranean Region |
| 6 | Macrophages |
| 6 | Lung |
| 6 | Lipids |
| 6 | Knowledge |
| 6 | Kenya |
| 6 | Iron |
| 6 | Invertebrates |
| 6 | Introduced Species |
| 6 | In Vitro Techniques |
| 6 | Hypertension |
| 6 | History, 17th Century |
| 6 | High-Throughput Nucleotide Sequencing |
| 6 | Herbivory |
| 6 | Gills |
| 6 | Geology |
| 6 | Genes, Mitochondrial |
| 6 | Gene Expression Regulation, Plant |
| 6 | Gene Expression Profiling |
| 6 | Fisheries |
| 6 | Endangered Species |
| 6 | Eating |
| 6 | Drug-Eluting Stents |
| 6 | Drosophila melanogaster |
| 6 | Disease Progression |
| 6 | Diagnosis, Differential |
| 6 | Dental Enamel |
| 6 | DNA, Helminth |
| 6 | DNA, Chloroplast |
| 6 | DNA, Bacterial |
| 6 | Cytokines |
| 6 | Cytochrome b Group |
| 6 | Culture Media |
| 6 | Cross-Sectional Studies |
| 6 | Coral Reefs |
| 6 | Chronic Disease |
| 6 | Child |
| 6 | Calcium |
| 6 | Bite Force |
| 6 | Bacterial Proteins |
| 6 | Ascomycota |
| 6 | Argentina |
| 6 | Antineoplastic Agents, Phytogenic |
| 6 | Alleles |
| 6 | Alkaloids |
| 6 | Air Pollutants |
| 6 | Adenine Nucleotides |
| 6 | 5'-Nucleotidase |
| 5 | Wetlands |
| 5 | Water Microbiology |
| 5 | Vocalization, Animal |
| 5 | Vertebral Artery Dissection |
| 5 | Vasodilator Agents |
| 5 | United States |
| 5 | United Kingdom |
| 5 | Ubiquitin |
| 5 | Triglycerides |
| 5 | Transcriptome |
| 5 | Transcription Factors |
| 5 | Trace Elements |
| 5 | Tissue Distribution |
| 5 | Thrombosis |
| 5 | Swimming |
| 5 | Stroke |
| 5 | Stress, Physiological |
| 5 | Statistics, Nonparametric |
| 5 | Spectrum Analysis |
| 5 | Spectrometry, Mass, Electrospray Ionization |
| 5 | Spain |
| 5 | Severity of Illness Index |
| 5 | Sepia |
| 5 | Sensitivity and Specificity |
| 5 | Research |
| 5 | Registries |
| 5 | Reference Standards |
| 5 | Recombinant Fusion Proteins |
| 5 | RNA, Ribosomal |
| 5 | Proteome |
| 5 | Protein Subunits |
| 5 | Protein Structure, Tertiary |
| 5 | Protein Processing, Post-Translational |
| 5 | Porifera |
| 5 | Pleural Cavity |
| 5 | Phosphoric Diester Hydrolases |
| 5 | Pesticides |
| 5 | Particle Size |
| 5 | Pan troglodytes |
| 5 | Odds Ratio |
| 5 | Nanoparticles |
| 5 | Moths |
| 5 | Models, Chemical |
| 5 | Microvascular Angina |
| 5 | Microscopy, Fluorescence |
| 5 | Microfilariae |
| 5 | Microcystis |
| 5 | Microbial Sensitivity Tests |
| 5 | Mice, Transgenic |
| 5 | Metals, Heavy |
| 5 | Mandible |
| 5 | Linear Models |
| 5 | Light |
| 5 | Jaw |
| 5 | Interleukin-6 |
| 5 | Insect Vectors |
| 5 | Human Migration |
| 5 | History, 16th Century |
| 5 | Helminths |
| 5 | Graphite |
| 5 | Gene Flow |
| 5 | Gene Expression Regulation, Developmental |
| 5 | Gastrointestinal Tract |
| 5 | Gas Chromatography-Mass Spectrometry |
| 5 | Fungi |
| 5 | Forelimb |
| 5 | Ferns |
| 5 | Ethiopia |
| 5 | Endothelium, Vascular |
| 5 | Ducks |
| 5 | Dracunculoidea |
| 5 | Diptera |
| 5 | Dinoflagellida |
| 5 | DNA, Protozoan |
| 5 | DNA, Plant |
| 5 | DNA Barcoding, Taxonomic |
| 5 | Cytoskeleton |
| 5 | Cell Membrane |
| 5 | Caves |
| 5 | Carcinoma 256, Walker |
| 5 | CADASIL |
| 5 | Bryophyta |
| 5 | Breast Neoplasms |
