EndodermVertebratesPhenotypeGene Expression Regulation, DevelopmentalSOXF Transcription FactorsMesodermZebrafishBody PatterningEmbryo, NonmammalianMolecular Sequence DataGastrulaZebrafish ProteinsIn Situ HybridizationEmbryonic InductionCell DifferentiationHomeodomain ProteinsEctodermGerm LayersTranscription FactorsAmino Acid SequenceNodal ProteinMutationMorphogenesisBase SequenceVisceraXenopus ProteinsGATA5 Transcription FactorGATA6 Transcription FactorSOX Transcription FactorsDigestive SystemSignal TransductionHepatocyte Nuclear Factor 3-betaCell LineageEmbryo, MammalianEmbryonic Stem CellsChick EmbryoYolk SacChordata, NonvertebrateEvolution, MolecularEmbryonic DevelopmentSequence Homology, Amino AcidDNA-Binding ProteinsGATA Transcription FactorsGenes, HomeoboxBiological EvolutionNotochordHigh Mobility Group ProteinsGATA4 Transcription FactorActivinsXenopusT-Box Domain ProteinsRNA, MessengerUrochordataAnimals, Genetically ModifiedGastrulationModels, BiologicalHMGB ProteinsOtx Transcription FactorsBranchial RegionSequence AlignmentEmbryonic and Fetal DevelopmentCloning, MolecularBone Morphogenetic ProteinsFetal ProteinsDrosophila ProteinsXenopus laevisTrans-ActivatorsDrosophilaFishesSpecies SpecificityFibroblast Growth FactorsBlastocystInvertebratesWnt ProteinsLampreysCiona intestinalisMice, TransgenicBone Morphogenetic Protein 4Conserved SequenceCell LineStem CellsChimeraDNA PrimersOrganogenesisGene ExpressionCells, CulturedDNA, ComplementaryTretinoinQuailReverse Transcriptase Polymerase Chain ReactionCoturnixHeadMice, KnockoutHagfishesNeural CrestChordataReptilesImmunohistochemistryTeratomaPancreas