OocytesEmbryo, MammalianEmbryo, NonmammalianChick EmbryoBlastocystEmbryo ImplantationEmbryonic DevelopmentOogenesisOocyte DonationXenopus laevisOocyte RetrievalMeiosisCleavage Stage, OvumEmbryonic and Fetal DevelopmentXenopusCryopreservationIn Vitro Oocyte Maturation TechniquesPregnancyGene Expression Regulation, DevelopmentalZygoteFertilizationMicroinjectionsBlastomeresEmbryo LossParthenogenesisSperm Injections, IntracytoplasmicOvumMorulaMetaphaseFertilization in VitroCumulus CellsNuclear Transfer TechniquesOvaryPregnancy RateSperm-Ovum InteractionsZona PellucidaMolecular Sequence DataSpermatozoaEmbryo DispositionZebrafishXenopus ProteinsRNA, MessengerEctogenesisIn Situ HybridizationCulture TechniquesBody PatterningEmbryo TransferGastrulaVitrificationCell NucleusMaturation-Promoting FactorCryoprotective AgentsOvulation InductionCytoplasmBase SequenceAmino Acid SequenceCattleInfertility, FemaleSuperovulationSingle Embryo TransferMorphogenesisTime FactorsEgg ProteinsFollicular FluidEmbryo ResearchMesodermCloning, OrganismDrosophila ProteinsRNA, ComplementaryDrosophilaEmbryo Culture TechniquesZebrafish ProteinsChorionic GonadotropinCulture MediaFetal ViabilityOvulationEctodermMice, Inbred ICRTranscription FactorsPregnancy OutcomeEthylene GlycolMutationCloning, MolecularReproductive TechniquesMice, Inbred StrainsHomeodomain ProteinsProto-Oncogene Proteins c-mosPreimplantation DiagnosisCell DifferentiationAnimals, Genetically ModifiedProgesteroneSwineSpindle ApparatusSea UrchinsGene ExpressionInfertilityAneuploidyChromosomesGranulosa CellsDrosophila melanogaster