EndodermNodal Signaling LigandsSOX Transcription FactorsMesodermEmbryonic InductionSOXF Transcription FactorsHepatocyte Nuclear Factor 3-betaNodal ProteinGastrulaGene Expression Regulation, DevelopmentalActivinsEmbryonic Stem CellsGerm LayersBody PatterningCell DifferentiationPrimitive StreakIn Situ HybridizationDigestive SystemMorphogenesisHomeodomain ProteinsHMGB ProteinsCell LineageGastrulationEctodermEmbryo, MammalianFibroblast Growth Factor 4Embryo, NonmammalianTranscription FactorsEmbryonic and Fetal DevelopmentXenopus ProteinsSignal TransductionEmbryoid BodiesWnt3 ProteinEmbryonic DevelopmentVisceraFetal ProteinsZebrafish ProteinsT-Box Domain ProteinsSomitesDNA-Binding ProteinsChick EmbryoYolk SacZebrafishGATA5 Transcription FactorGATA6 Transcription FactorPluripotent Stem CellsTrans-ActivatorsPancreasHorseradish PeroxidaseProsencephalonEnzyme InductionBone Morphogenetic ProteinsTransforming Growth Factor betaBone Morphogenetic Protein 4XenopusCell LineFibroblast Growth FactorsCoturnixMolecular Sequence DataGATA Transcription FactorsCell Culture TechniquesGATA4 Transcription FactorQuailMice, TransgenicGenes, HomeoboxReverse Transcriptase Polymerase Chain ReactionGene ExpressionCells, CulturedBranchial RegionHigh Mobility Group ProteinsRNA, MessengerGene Expression ProfilingXenopus laevisBlastocystBase SequenceReceptor, Platelet-Derived Growth Factor alphaWnt ProteinsGoosecoid ProteinNuclear ProteinsHepatocytesChimeraCulture Media, Serum-FreeBlastulaHeadTretinoinOtx Transcription FactorsLeft-Right Determination FactorsStem CellsBiological MarkersNotochordAmino Acid SequenceTeratoma