Embryo, MammalianEmbryonic DevelopmentCleavage Stage, OvumBlastocystEmbryo Culture TechniquesEmbryo, NonmammalianZygoteEmbryo TransferFertilization in VitroEmbryonic and Fetal DevelopmentCryopreservationBlastomeresGene Expression Regulation, DevelopmentalEmbryo ImplantationMammalsChick EmbryoOocytesPregnancyGerm LayersMolecular Sequence DataEndodermFetal ViabilityBase SequenceEmbryonic Stem CellsBody PatterningCell DifferentiationOctamer Transcription Factor-3Sea UrchinsAmino Acid SequenceCell LineageMorphogenesisTranscription FactorsGenomic ImprintingIn Situ HybridizationMorulaPluripotent Stem CellsCulture TechniquesGastrulaPregnancy RateFertilizationEctodermSperm Injections, IntracytoplasmicEmbryo LossSignal TransductionCells, CulturedOvumRNA, MessengerXenopus ProteinsStem CellsMice, Inbred C57BLZebrafishTime FactorsMesodermCell NucleusYolk SacOogenesisBlastulaHomeodomain ProteinsXenopus laevisTotipotent Stem CellsMutationBlastocyst Inner Cell MassFibroblast Growth Factor 4XenopusCloning, MolecularMice, Inbred CBARNA, Ribosomal, 18SCattleEmbryo DispositionCytoplasmTissue SurvivalTrophoblastsNeural CrestMice, Inbred ICRDNA-Binding ProteinsCell DivisionDNA CleavageMeiosisGene ExpressionModels, BiologicalCell LinePhenotypeCloning, OrganismSequence Homology, Amino AcidEmbryo ResearchGestational AgeSingle Embryo TransferMice, TransgenicNuclear Transfer TechniquesZebrafish ProteinsEctogenesisDNAImmunohistochemistrySubstrate SpecificityDrosophila ProteinsDrosophilaMice, KnockoutBinding SitesKineticsDNA, Complementary