In Vitro Oocyte Maturation TechniquesOocytesOogenesisEmbryo Culture TechniquesFertilizationFertilization in VitroCumulus CellsMeiosisSperm-Ovum InteractionsSpermatozoaOvumEmbryonic DevelopmentBlastocystEmbryo TransferOvarian FollicleOocyte RetrievalParthenogenesisSperm Injections, IntracytoplasmicZygoteZona PellucidaPregnancyCryopreservationCleavage Stage, OvumMetaphaseFollicular FluidOvaryChorionic GonadotropinOvulation InductionPregnancy RateEctogenesisMicroinjectionsEmbryonic and Fetal DevelopmentOocyte DonationMaturation-Promoting FactorFollicle Stimulating HormoneCattleOvulationXenopus laevisStarfishInfertility, FemaleCells, CulturedProto-Oncogene Proteins c-mosProgesteroneEmbryo, Mammalian