Embryo, MammalianEmbryonic DevelopmentBlastocystEmbryonic and Fetal DevelopmentMammalsGene Expression Regulation, DevelopmentalZygoteEmbryo Culture TechniquesGerm LayersEmbryo, NonmammalianEndodermResearchEmbryonic Stem CellsPregnancyChick EmbryoOocytesOctamer Transcription Factor-3Cell DifferentiationEmbryo ImplantationCell LineageGenomic ImprintingMolecular Sequence DataPluripotent Stem CellsTranscription FactorsBlastomeresCleavage Stage, OvumBase SequenceCulture TechniquesStem CellsMorulaSignal TransductionMice, Inbred C57BLEctodermBody PatterningTotipotent Stem CellsYolk SacMorphogenesisCells, CulturedFertilization in VitroFibroblast Growth Factor 4Blastocyst Inner Cell MassMesodermIn Situ HybridizationResearch Support as TopicHomeodomain ProteinsAmino Acid SequenceMice, Inbred CBAResearch DesignTissue SurvivalEthics, ResearchResearch PersonnelTrophoblastsEmbryo LossRNA, MessengerNeural CrestMice, Inbred ICRNursing ResearchCattleTime FactorsModels, BiologicalDNA-Binding ProteinsGene ExpressionPhenotypeHealth Services ResearchTranslational Medical ResearchGestational AgeEmbryo ResearchMice, TransgenicEmbryo DispositionGenetic ResearchImmunohistochemistryCell LineEpigenesis, GeneticMice, KnockoutZebrafishCryopreservationSequence Homology, Amino AcidMutationCloning, MolecularGastrulaCell MovementClinical Nursing ResearchCloning, Organism