Cumulus CellsOocytesFertilization in VitroOvarian FollicleCattleOogenesisMeiosisIn Vitro Oocyte Maturation TechniquesOocyte RetrievalSperm-Ovum InteractionsOocyte DonationGranulosa CellsFertilizationBone Morphogenetic Protein 15OvaryXenopus laevisBlastocystGrowth Differentiation Factor 9Embryonic DevelopmentZona PellucidaFollicular FluidOvumSperm Injections, IntracytoplasmicOvulationParthenogenesisSpermatozoaEmbryo TransferMetaphaseXenopusMicroinjectionsChorionic GonadotropinEmbryo Culture TechniquesHyaluronoglucosaminidaseCryopreservationCleavage Stage, OvumCells, CulturedNuclear Transfer TechniquesPregnancySwineZygoteProgesteroneCryoprotective AgentsEmbryo, MammalianGonadotropins, EquineMaturation-Promoting FactorOvulation InductionSuperovulationHyaluronic AcidRNA, MessengerGonadotropinsCell NucleusEmbryonic and Fetal DevelopmentInfertility, FemaleCloning, OrganismPregnancy RateVitrificationLuteinizing HormoneCulture Media