Embryo, MammalianBlastocystEmbryonic DevelopmentEmbryo, NonmammalianEmbryonic and Fetal DevelopmentGene Expression Regulation, DevelopmentalChick EmbryoZygoteMammalsEmbryo ImplantationEmbryo Culture TechniquesBlastomeresCleavage Stage, OvumPregnancyCulture TechniquesMorulaClinical ProtocolsEctodermBody PatterningMolecular Sequence DataEndodermFertilization in VitroTotipotent Stem CellsYolk SacMorphogenesisFibroblast Growth Factor 4Blastocyst Inner Cell MassMesodermIn Situ HybridizationGerm LayersTranscription FactorsOocytesHomeodomain ProteinsCell DifferentiationMice, Inbred CBAAmino Acid SequenceCell LineageTissue SurvivalOctamer Transcription Factor-3Base SequenceEmbryonic Stem CellsTrophoblastsSignal TransductionEmbryo LossRNA, MessengerNeural CrestTime FactorsMice, Inbred ICRMice, Inbred C57BLGenomic ImprintingCattleDNA-Binding ProteinsGene ExpressionModels, BiologicalStem CellsPluripotent Stem CellsPhenotypeGestational AgeMice, TransgenicCells, CulturedImmunohistochemistryCryopreservationEmbryo DispositionCell LineMice, KnockoutZebrafishEpigenesis, GeneticSequence Homology, Amino AcidCloning, MolecularMutationGastrulaCell MovementCloning, OrganismPregnancy RateZebrafish ProteinsEmbryo ResearchDrosophila ProteinsDrosophilaDNA, ComplementarySingle Embryo TransferNuclear Transfer TechniquesDNACricetinaeEctogenesisXenopus ProteinsSpecies SpecificityCell NucleusTranscription, GeneticAnimals, Genetically ModifiedSequence AlignmentProteinsFertilizationSperm Injections, IntracytoplasmicTOR Serine-Threonine KinasesDNA PrimersXenopus laevisXenopusMicroinjectionsProtein BindingTransfection