EctodermSea UrchinsEmbryo, NonmammalianGene Expression Regulation, DevelopmentalMolecular Sequence DataBase SequenceBody PatterningEmbryonic InductionMesodermGastrulaHomeodomain ProteinsEndodermCell LineageIn Situ HybridizationMorphogenesisCell DifferentiationXenopus ProteinsTranscription FactorsNervous SystemBone Morphogenetic ProteinsChick EmbryoZebrafish ProteinsNeural CrestSignal TransductionBone Morphogenetic Protein 4ZebrafishDrosophila ProteinsNeural PlateGenes, HomeoboxGerm LayersDrosophilaWnt ProteinsReceptors, NotchGastrulationXenopusNodal ProteinFibroblast Growth FactorsHedgehog ProteinsBasic Helix-Loop-Helix Transcription FactorsNotochordBlastulaOtx Transcription FactorsEmbryonic StructuresXenopus laevisPaired Box Transcription FactorsStem CellsEmbryonic DevelopmentExtremitiesFibroblast Growth Factor 8LIM-Homeodomain ProteinsDNA-Binding ProteinsTrans-ActivatorsEmbryo, MammalianNerve Tissue ProteinsModels, BiologicalStrongylocentrotus purpuratusAnimals, Genetically ModifiedEmbryonic Stem CellsT-Box Domain ProteinsRepressor ProteinsQuailCentral Nervous SystemRhombencephalonLimb BudsEyeMutationBlastomeresWnt1 ProteinBranchial RegionGenes, InsectOrganizers, EmbryonicHeadEmbryonic and Fetal DevelopmentPhenotypeTissue TransplantationFetal ProteinsSomitesNeuronsSOXB1 Transcription FactorsOrganogenesisAmino Acid SequenceChimeraActivinsAvian ProteinsEye ProteinsDrosophila melanogasterLens, CrystallineBone Morphogenetic Protein ReceptorsNeurogenesisMorpholinosLarvaGATA Transcription FactorsHMGB ProteinsWingNeural TubeProsencephalonGerm CellsWnt3 ProteinHigh Mobility Group ProteinsEpidermis