Sperm Injections, IntracytoplasmicFertilization in VitroMicroinjectionsInfertility, MaleSpermatozoaSperm HeadOligospermiaEmbryo TransferSperm CountPregnancyPregnancy RateReproductive TechniquesOocytesSperm RetrievalCryopreservationInjectionsMicromanipulationPregnancy OutcomeFertilizationSemen PreservationSperm-Ovum InteractionsSperm MotilityEjaculationCytoplasmCleavage Stage, OvumEmbryo ImplantationInsemination, ArtificialTestisSperm CapacitationSemenReproductive Techniques, AssistedAzoospermiaSperm MaturationEpididymisInfertilityY ChromosomeZona PellucidaAcrosomePregnancy, MultipleBlastocystZygoteOvulation InductionOocyte RetrievalEmbryo, MammalianSuctionEmbryonic and Fetal DevelopmentKlinefelter SyndromeInfertility, FemaleSemen AnalysisEmbryonic DevelopmentVasovasostomyTripletsSex Chromosome AberrationsSpermatidsSperm TailChromosome AberrationsAbortion, SpontaneousCongenital AbnormalitiesLive BirthMenotropinsFertilityInsemination, Artificial, HomologousSperm TransportEmbryo Culture TechniquesAneuploidyFollicle Stimulating HormoneMicrosurgeryMicroscopy, ElectronVasectomyKaryotypingDigestive System AbnormalitiesSpermatogenesisPovidoneSperm MidpieceInseminationParthenogenesisMetaphaseInclusion BodiesTwinsInjections, IntravenousInjections, IntramuscularCryoprotective AgentsFollicular FluidFollicle Stimulating Hormone, HumanPreimplantation DiagnosisCell NucleusRetrospective StudiesVas DeferensInclusion Bodies, ViralSperm BanksOvarian Hyperstimulation SyndromeHorsesIn Situ Hybridization, FluorescenceDNA FragmentationTime FactorsChromosome DisordersBlastomeresAcrosome ReactionProtaminesZygote Intrafallopian Transfer