SpecializationBiological EvolutionPhylogenySeminiferous EpitheliumMedical History TakingHistory, 20th CenturySertoli CellsEcosystemSpecies SpecificityEvolution, MolecularBlood-Testis BarrierAdaptation, BiologicalHistory, 19th CenturyFunctional LateralityHistory of MedicineEcologyHistory, 17th CenturyAnimal DistributionHistory, 18th CenturyAdaptation, PhysiologicalFeeding BehaviorDominance, CerebralPollinationFalkland IslandsFossilsSpermatidsHistory, AncientIntercellular JunctionsMicroscopy, ElectronMolecular Sequence DataHistoryTarsiidaePerciformesHost SpecificityHistory, 21st CenturySpecialties, SurgicalHistory, MedievalGenetic SpeciationBiodiversityBrain MappingMagnetic Resonance ImagingRisk FactorsHistory, 16th CenturyBirdsFreeze FracturingGeographySynapsesPredatory BehaviorHydrazinesAntsLorisidaeFoot Deformities, AcquiredGenetic VariationEnvironmentBrainPapio ursinusSymbiosisPalaeognathaePopulation DynamicsTime FactorsOrchidaceaeSeed DispersalPaleontologyPlant Physiological PhenomenaInsectsIndazolesMedicinePlantsGene DuplicationAcaciaSympatryModels, BiologicalSpermatogenesisHistory, 15th CenturyBeakPlant NectarChiropteraAcoustic StimulationBeesNeuromuscular JunctionBehavior, AnimalFood ChainMaxillary SinusSequence Analysis, DNANeuronsThysanopteraEcotypeInformation TheoryBody PatterningHospitals, SpecialPrimatesReceptors, CholinergicSocial BehaviorSelection, GeneticAuditory PerceptionAnalysis of VarianceAxonsOsmium CompoundsPaleodontologyPhotic Stimulation