Sperm CountSpermatogenesisTestisSpermatozoaSeminiferous TubulesSertoli CellsFertilityEpididymisSperm HeadSperm MaturationInfertility, MaleOrgan SizeSeminiferous EpitheliumSemenTestosteroneSperm CapacitationSperm MotilityScrotumOligospermiaEjaculationSexual Behavior, AnimalSemen AnalysisReproductive Physiological PhenomenaAsthenozoospermiaSexual MaturationProphaseSpermatogoniaTesticular DiseasesReproductionFollicle Stimulating HormoneSpermatidsLeydig CellsSertoli Cell-Only SyndromeCell CountSeminal VesiclesPoeciliaGenitalia, MaleLuteinizing HormoneSperm TransportPropylthiouracilInsemination, ArtificialSperm-Ovum InteractionsEstrogens, Non-SteroidalMeiosisSperm Injections, IntracytoplasmicGonadotropins, PituitaryAcrosomeBody WeightGerm CellsSperm MidpieceFertilizationInhibinsSpermatocytesSperm BanksOrchiectomyAgingSemen PreservationHorsesBreedingSwinePregnancyCattleZona PellucidaAnimals, NewbornSeasonsBiological EvolutionTime FactorsSelection, GeneticRats, Sprague-DawleySpecies SpecificityCryopreservationSperm WhaleOvumSeminal Plasma ProteinsProtaminesSea UrchinsOocytesEgg ProteinsAzoospermiaFallopian TubesSeminal Vesicle Secretory ProteinsCryoprotective AgentsVasectomyWhalesInseminationPregnancy RateVitelline MembraneMicroinjectionsDNA FragmentationCopulationReproductive Techniques, AssistedAneuploidyJournal Impact FactorReproductive TechniquesZygoteOviductsContraceptive Agents, MaleMolecular Sequence DataTreatment OutcomePovidone