EndodermGastrulaEmbryonic InductionMesodermXenopus ProteinsQuailBody PatterningGene Expression Regulation, DevelopmentalHomeodomain ProteinsChick EmbryoIn Situ HybridizationHeartCell DifferentiationSOXF Transcription FactorsGerm LayersVisceraGATA6 Transcription FactorEctodermGATA5 Transcription FactorNodal ProteinHepatocyte Nuclear Factor 3-betaSOX Transcription FactorsDigestive SystemYolk SacEmbryo, NonmammalianEmbryonic Stem CellsMorphogenesisCell LineageGATA4 Transcription FactorGATA Transcription FactorsEmbryo, MammalianActivinsZebrafish ProteinsTranscription FactorsHigh Mobility Group ProteinsHMGB ProteinsZebrafishBlastocystNotochordEmbryonic and Fetal DevelopmentEmbryonic DevelopmentT-Box Domain ProteinsOtx Transcription FactorsGastrulationFetal ProteinsBranchial RegionTeratoma