Embryo, MammalianEmbryonic DevelopmentBlastocystEmbryonic and Fetal DevelopmentGene Expression Regulation, DevelopmentalMammalsZygoteEmbryo, NonmammalianEmbryo Culture TechniquesChick EmbryoGerm LayersEmbryo ImplantationEndodermPregnancyEmbryonic Stem CellsOocytesBlastomeresOctamer Transcription Factor-3Cleavage Stage, OvumMolecular Sequence DataCell DifferentiationCulture TechniquesCell LineageMorulaTranscription FactorsEctodermBody PatterningGenomic ImprintingPluripotent Stem CellsBase SequenceTotipotent Stem CellsYolk SacMorphogenesisFibroblast Growth Factor 4Fertilization in VitroSignal TransductionBlastocyst Inner Cell MassMesodermIn Situ HybridizationMice, Inbred C57BLStem CellsHomeodomain ProteinsMice, Inbred CBAAmino Acid SequenceTissue SurvivalTrophoblastsEmbryo LossCells, CulturedNeural CrestRNA, MessengerMice, Inbred ICRCattleDNA-Binding ProteinsGene ExpressionModels, BiologicalTime FactorsGestational AgeMice, TransgenicPhenotypeEmbryo DispositionImmunohistochemistryMice, KnockoutCell LineEpigenesis, GeneticZebrafishSequence Homology, Amino AcidGastrulaCryopreservationCloning, MolecularMutationCell MovementCloning, OrganismZebrafish ProteinsDrosophila ProteinsEmbryo ResearchDrosophilaSingle Embryo TransferNuclear Transfer TechniquesDNA, ComplementaryEctogenesisXenopus ProteinsCricetinaeDNAPregnancy RateCell NucleusTranscription, GeneticAnimals, Genetically ModifiedTOR Serine-Threonine KinasesSequence AlignmentFertilizationXenopus laevisSpecies SpecificityXenopusSperm Injections, IntracytoplasmicMicroinjectionsProteinsDrosophila melanogasterSeedsParthenogenesisProtein Binding