In Vitro Oocyte Maturation TechniquesOocytesOogenesisEmbryo Culture TechniquesMeiosisMaturation-Promoting FactorStarfishBlastodiscProto-Oncogene Proteins c-mosCumulus CellsXenopusMicroinjectionsOvarian FollicleMetaphaseOvumXenopus laevisFertilizationHydroxyprogesteronesCDC2 Protein KinaseProgesteroneParthenogenesisCortodoxoneOvaryFertilization in VitroCyclin BProtamine KinaseCytoplasmOncogene Proteins v-mosSperm-Ovum InteractionsChorionic GonadotropinCell NucleusOkadaic AcidXenopus ProteinsCells, CulturedHypoxanthinePhysiology1-Methyl-3-isobutylxanthineSynaptic VesiclesGonadotropinsFollicle Stimulating HormoneCyclin B1SwineEthers, CyclicMitosisEmbryonic DevelopmentMicroscopy, ConfocalSpindle ApparatusGranulosa Cells