SpermatozoaSperm MotilityAcrosomeSemen PreservationMicroscopy, ElectronEpididymisSperm HeadSperm TransportSperm MaturationAcrosome ReactionSperm TailSemenEjaculationCryopreservationInfertility, MaleSperm CountTestisFertilizationZona PellucidaOligospermiaSperm AgglutinationMicroscopy, Electron, TransmissionSpermatogenesisFertilization in VitroInsemination, ArtificialMicroscopy, Electron, ScanningCryoprotective AgentsSemen AnalysisSpermatidsFertilityAcrosinChlorohydrinsSperm Injections, Intracytoplasmicalpha-ChlorohydrinFallopian TubesFreeze SubstitutionFreeze EtchingAsthenozoospermiaFreezingCell MembraneChlortetracyclineSex PreselectionOocytesCattleSwineMicroscopy, Phase-ContrastChromomycin A3Seminal Plasma ProteinsOrganoidsCytoplasmStaining and LabelingPovidoneSperm RetrievalHistocytochemistryOvumMicroinjectionsPregnancyProtaminesVasectomyY ChromosomeMesocricetusTrematodaInseminationFreeze DryingCervix MucusEmbryo TransferInclusion BodiesSeminal Vesicle Secretory ProteinsCricetinaeSheepFreeze FracturingSeminiferous TubulesRete TestisCytoplasmic GranulesPhosphotungstic AcidMitochondriaVitelline MembraneCell NucleusSperm MidpieceTime FactorsCalcimycinMicroscopy, FluorescenceEpitheliumFlagellaOviductsEgg YolkKlinefelter SyndromeMarsupialiaHorsesSertoli CellsCulture MediaCell WallMicroscopy, ImmunoelectronHistological TechniquesRabbitsCell SurvivalCalciumImmunohistochemistryCell SeparationDNA Fragmentation