ZygoteFertilizationFertilization in VitroEmbryo, MammalianSpermatozoaEmbryo, NonmammalianOocytesBlastocystEmbryonic DevelopmentSperm-Ovum InteractionsPregnancyEmbryo TransferEmbryo ImplantationOvumCleavage Stage, OvumChick EmbryoSperm Injections, IntracytoplasmicEmbryonic and Fetal DevelopmentPregnancy RateZygote Intrafallopian TransferCryopreservationZona PellucidaEmbryo Implantation, DelayedSea UrchinsBlastomeresMicroinjectionsGene Expression Regulation, DevelopmentalMorulaSperm MotilityEmbryo LossTime FactorsOvulation InductionCochlear ImplantationParthenogenesisInfertilityInfertility, FemaleAcrosomeFallopian TubesEmbryo Culture TechniquesPregnancy OutcomeUterusLens Implantation, IntraocularInfertility, MaleAcrosome ReactionPhaeophytaSuperovulation