In Vitro Oocyte Maturation TechniquesOocytesSpermatozoaSperm Injections, IntracytoplasmicEmbryo Culture TechniquesOogenesisFertilization in VitroFertilizationMicroinjectionsEmbryo TransferInfertility, MaleOligospermiaSperm HeadPregnancyPregnancy RateSperm-Ovum InteractionsReproductive TechniquesCryopreservationSperm CountCleavage Stage, OvumSperm MotilityMeiosisPregnancy OutcomeMicromanipulationSperm RetrievalZygoteBlastocystEmbryonic DevelopmentCytoplasmSemen PreservationZona PellucidaOocyte RetrievalEmbryo ImplantationOvulation InductionOvumEjaculationInsemination, ArtificialTestisInfertility, FemaleReproductive Techniques, AssistedEmbryonic and Fetal DevelopmentSperm CapacitationEmbryo, MammalianSperm MaturationInfertilityAcrosomeCumulus CellsSemenMetaphaseOvarian FollicleParthenogenesisEpididymisAzoospermiaOocyte DonationFollicular FluidChorionic GonadotropinPregnancy, MultipleFollicle Stimulating HormoneY ChromosomeOvarySuctionXenopus laevis