In Vitro Oocyte Maturation TechniquesOocytesFertilizationEmbryo Culture TechniquesOogenesisFertilization in VitroParthenogenesisSperm-Ovum InteractionsSpermatozoaOvumMeiosisZygoteSperm HeadBlastocystSperm Injections, IntracytoplasmicEmbryo TransferCysteamineMicroinjectionsEmbryonic DevelopmentMaturation-Promoting FactorCell NucleusCumulus CellsSwineZona PellucidaOocyte DonationOocyte RetrievalXenopus laevisPregnancyNuclear Transfer TechniquesCulture MediaXenopusCleavage Stage, OvumPregnancy RateMetaphaseCryopreservationOvaryOvarian FollicleOvulation InductionCattleProto-Oncogene Proteins c-mosIonophoresChorionic GonadotropinInfertility, FemaleStarfishFollicular FluidSperm MotilityOvulationEgg ProteinsGenes, mos