EndodermPhenotypeEmbryo, MammalianEmbryo, NonmammalianChick EmbryoGene Expression Regulation, DevelopmentalSOXF Transcription FactorsBlastocystMesodermEmbryo ImplantationEmbryonic DevelopmentGastrulaBody PatterningEmbryonic InductionCell DifferentiationEctodermEmbryonic and Fetal DevelopmentIn Situ HybridizationGerm LayersMorphogenesisHomeodomain ProteinsZebrafishNodal ProteinTranscription FactorsMutationVisceraEmbryo LossZebrafish ProteinsMolecular Sequence DataYolk SacGATA6 Transcription FactorBlastomeresGATA5 Transcription FactorHepatocyte Nuclear Factor 3-betaXenopus ProteinsDigestive SystemEmbryonic Stem CellsCell LineageSOX Transcription FactorsPregnancySignal TransductionBase SequenceCleavage Stage, OvumNotochordFertilization in VitroZygoteRNA, MessengerAmino Acid SequenceDNA-Binding ProteinsActivinsGATA4 Transcription FactorChimeraT-Box Domain ProteinsGastrulationHigh Mobility Group ProteinsGATA Transcription FactorsMorulaCulture TechniquesBranchial RegionHMGB ProteinsBone Morphogenetic ProteinsMice, TransgenicAnimals, Genetically ModifiedCoturnixOtx Transcription FactorsEmbryo DispositionTrans-ActivatorsBone Morphogenetic Protein 4QuailXenopusSea UrchinsModels, BiologicalGenes, HomeoboxStem CellsMice, KnockoutDrosophila ProteinsTime FactorsMice, Inbred C57BLDrosophilaUrochordataGene ExpressionFibroblast Growth FactorsBlastodermTeratomaReverse Transcriptase Polymerase Chain ReactionImmunohistochemistryXenopus laevisTretinoinOocytesCell LineOrganogenesisCryopreservationDNA PrimersFetal ProteinsWnt ProteinsMice, Mutant StrainsFibroblast Growth Factor 4PancreasNeural CrestGenotype