Sperm Injections, IntracytoplasmicFertilization in VitroInfertility, MaleMicroinjectionsSpermatozoaOligospermiaSperm HeadEmbryo TransferSperm CountPregnancy RatePregnancyOocytesReproductive TechniquesSperm RetrievalCryopreservationPregnancy OutcomeFertilizationMicromanipulationInjectionsSemen PreservationSperm MotilitySperm-Ovum InteractionsEmbryo ImplantationCleavage Stage, OvumEjaculationTestisCytoplasmReproductive Techniques, AssistedInsemination, ArtificialSperm CapacitationSemenInfertilityEpididymisSperm MaturationPregnancy, MultipleAzoospermiaOvulation InductionOocyte RetrievalBlastocystY ChromosomeZona PellucidaAcrosomeZygoteEmbryo, MammalianInfertility, FemaleSuctionEmbryonic and Fetal DevelopmentEmbryonic DevelopmentSemen AnalysisTripletsSex Chromosome AberrationsAbortion, SpontaneousCongenital AbnormalitiesKlinefelter SyndromeVasovasostomySperm TailSpermatidsLive BirthEmbryo Culture TechniquesInsemination, Artificial, HomologousAneuploidyChromosome AberrationsMenotropinsFertilityFollicle Stimulating HormoneTwinsMicrosurgerySperm TransportKaryotypingMetaphasePreimplantation DiagnosisSpermatogenesisPovidoneMicroscopy, ElectronVasectomyParthenogenesisRetrospective StudiesInseminationFollicle Stimulating Hormone, HumanOvarian Hyperstimulation SyndromeFollicular FluidDigestive System AbnormalitiesCryoprotective AgentsDNA FragmentationSperm MidpieceCell NucleusIn Situ Hybridization, FluorescenceTissue and Organ HarvestingVas DeferensInclusion BodiesInjections, IntravenousInjections, IntramuscularTime FactorsProtaminesBlastomeresHorsesAcrosome ReactionChromosome DisordersGonadotropin-Releasing HormoneOocyte Donation