Sperm Injections, IntracytoplasmicFertilization in VitroFertilizationSpermatozoaMicroinjectionsInfertility, MaleEmbryo TransferSperm HeadOligospermiaOocytesSperm-Ovum InteractionsSperm CountPregnancyPregnancy RateReproductive TechniquesCryopreservationSperm RetrievalSperm MotilityPregnancy OutcomeOvumMicromanipulationSemen PreservationInjectionsCleavage Stage, OvumZygoteSperm CapacitationZona PellucidaEmbryo ImplantationEjaculationInsemination, ArtificialCytoplasmAcrosomeTestisSemenInfertilityReproductive Techniques, AssistedBlastocystOvulation InductionInfertility, FemaleSperm MaturationEpididymisEmbryonic DevelopmentAzoospermiaEmbryonic and Fetal DevelopmentOocyte RetrievalEmbryo, MammalianPregnancy, MultipleEgg ProteinsY ChromosomeSuctionSemen AnalysisFertilityEgg YolkSperm TailSpermatidsKlinefelter SyndromeAcrosome ReactionMenotropinsLive BirthEmbryo Culture TechniquesParthenogenesisSperm TransportTripletsAbortion, SpontaneousVasovasostomySex Chromosome AberrationsFollicle Stimulating HormoneChromosome AberrationsFollicular FluidCongenital AbnormalitiesSea UrchinsInseminationInsemination, Artificial, HomologousAneuploidyMetaphaseFallopian TubesSpermatogenesisCryoprotective AgentsMicroscopy, ElectronMicrosurgeryMeiosisOocyte DonationOvarian FollicleOvarian Hyperstimulation SyndromeTime FactorsCell NucleusChorionic GonadotropinBlastomeresPovidoneTwinsIn Vitro Oocyte Maturation TechniquesKaryotypingPreimplantation DiagnosisFollicle Stimulating Hormone, HumanVasectomyVitelline MembraneSperm MidpieceEgg ShellRetrospective StudiesProtamines