EndodermSOXF Transcription FactorsGerm LayersNeoplasms, Germ Cell and EmbryonalGene Expression Regulation, DevelopmentalMesodermGastrulaEmbryonic InductionCell DifferentiationBody PatterningEctodermVisceraNodal ProteinGATA6 Transcription FactorGATA5 Transcription FactorWheat Germ AgglutininsEmbryo, NonmammalianIn Situ HybridizationHepatocyte Nuclear Factor 3-betaDigestive SystemSOX Transcription FactorsHomeodomain ProteinsYolk SacEmbryonic Stem CellsCell LineageEmbryo, MammalianMorphogenesisTestisTranscription FactorsSpermatogenesisZebrafish ProteinsTeratomaGATA4 Transcription FactorActivinsXenopus ProteinsGATA Transcription FactorsZebrafishTooth GermHigh Mobility Group ProteinsHMGB ProteinsEmbryonic DevelopmentEmbryonic and Fetal DevelopmentBlastocystNotochordGastrulationTesticular NeoplasmsT-Box Domain ProteinsFetal ProteinsChimeraSignal TransductionChick EmbryoOtx Transcription FactorsBranchial RegionBone Morphogenetic Protein 4BlastulaMolecular Sequence DataSpermatozoaDNA-Binding ProteinsPancreasStem CellsEmbryoid BodiesTretinoinBone Morphogenetic ProteinsHepatocyte Nuclear Factor 3-gammaFibroblast Growth Factor 4GerminomaFibroblast Growth FactorsPrimitive StreakRNA, MessengerBase SequenceSpermatogoniaSertoli CellsCarcinoma, EmbryonalUrochordataCoturnixOctamer Transcription Factor-3Seminiferous TubulesPluripotent Stem CellsQuailTeratocarcinomaOrganogenesisGenes, HomeoboxLeft-Right Determination FactorsTrans-ActivatorsGonadsSpermatocytesEmbryonic StructuresXenopusSpermatidsModels, BiologicalBlastomeresalpha-FetoproteinsWnt ProteinsHeadEmbryonal Carcinoma Stem CellsAmino Acid SequenceImmunohistochemistryBlastodermPharynxMice, Transgenic