EndodermVisceraPhenotypeGastrulaGene Expression Regulation, DevelopmentalYolk SacBody PatterningSOXF Transcription FactorsEctodermMesodermOtx Transcription FactorsNodal ProteinEmbryonic InductionLeft-Right Determination FactorsGATA6 Transcription FactorEmbryo, MammalianEmbryonic and Fetal DevelopmentCell DifferentiationIn Situ HybridizationGerm LayersHepatocyte Nuclear Factor 3-betaGATA4 Transcription FactorHomeodomain ProteinsEmbryonic DevelopmentMorphogenesisTranscription FactorsBlastocystEmbryonic Stem CellsChimeraHeadCell LineageGATA5 Transcription FactorSOX Transcription FactorsBone Morphogenetic Protein 4Digestive SystemSignal TransductionEmbryo, NonmammalianExtraembryonic Membranesalpha-FetoproteinsTeratomaDNA-Binding ProteinsCarcinoma, EmbryonalMice, TransgenicMutationMolecular Sequence DataEmbryonal Carcinoma Stem CellsFolate Receptor 1Bone Morphogenetic ProteinsOrganizers, EmbryonicTretinoinProsencephalonHepatocyte Nuclear Factor 4Zebrafish ProteinsMice, Mutant StrainsHepatocyte Nuclear Factor 1-betaTrans-ActivatorsStem CellsGATA Transcription FactorsActivinsEmbryo Culture TechniquesGene TargetingGenes, HomeoboxXenopus ProteinsBase SequenceHigh Mobility Group ProteinsZebrafishHMGB ProteinsMice, KnockoutBasic Helix-Loop-Helix Leucine Zipper Transcription FactorsRNA, MessengerTransforming Growth Factor betaWnt ProteinsLIM-Homeodomain ProteinsNotochordModels, BiologicalT-Box Domain ProteinsLow Density Lipoprotein Receptor-Related Protein-2TransgenesProteinsGastrulationChick EmbryoFetal ProteinsBranchial RegionCell MovementGenes, LethalReverse Transcriptase Polymerase Chain ReactionMice, Inbred C57BLCell LineHomozygoteLamininDNA PrimersMice, Inbred StrainsPancreasCells, CulturedIntestinesAmino Acid SequenceNuclear ProteinsGene ExpressionPregnancyGreen Fluorescent Proteins