In Vitro Oocyte Maturation TechniquesOocytesEmbryo Culture TechniquesFertilizationOogenesisFertilization in VitroOvarySperm-Ovum InteractionsSpermatozoaOvumMeiosisEmbryo TransferZygoteCumulus CellsZona PellucidaEmbryonic DevelopmentOvarian FollicleSperm Injections, IntracytoplasmicPregnancyBlastocystMicroinjectionsPregnancy RateOocyte RetrievalCleavage Stage, OvumXenopus laevisOvulation InductionStarfishChorionic GonadotropinOvulationParthenogenesisCryopreservationOocyte DonationSperm MotilityInfertility, Female