Gene Expression Regulation, DevelopmentalBody PatterningCell LineageHomeodomain ProteinsEmbryo, NonmammalianCell DifferentiationTranscription FactorsMesodermEndodermZebrafish ProteinsIn Situ HybridizationReceptors, NotchZebrafishEctodermDrosophila ProteinsEmbryonic InductionMorphogenesisBasic Helix-Loop-Helix Transcription FactorsSignal TransductionStem CellsDrosophilaXenopus ProteinsGenes, HomeoboxGastrulaBone Morphogenetic ProteinsLIM-Homeodomain ProteinsNodal ProteinWnt ProteinsAnimals, Genetically ModifiedHedgehog ProteinsEmbryonic Stem CellsNerve Tissue ProteinsNeural PlateChick EmbryoModels, BiologicalMutationT-Box Domain ProteinsDNA-Binding ProteinsNeural CrestBlastomeresEmbryonic DevelopmentNotochordBone Morphogenetic Protein 4Otx Transcription FactorsOrganogenesisGastrulationVulvaGATA Transcription FactorsCaenorhabditis elegansRepressor ProteinsNeuronsPhenotypeEyeTrans-ActivatorsMolecular Sequence DataPaired Box Transcription FactorsGenes, InsectCaenorhabditis elegans ProteinsRhombencephalonSea UrchinsDrosophila melanogasterGerm CellsNeurogenesisEmbryo, MammalianNervous SystemWnt1 ProteinFibroblast Growth FactorsStrongylocentrotus purpuratusPhotoreceptor Cells, InvertebrateXenopusTelencephalonGerm LayersLarvaSOXF Transcription FactorsAvian ProteinsMorpholinosCentral Nervous SystemEye ProteinsSense OrgansFetal ProteinsBase SequenceAmino Acid SequenceWingInsect Proteinsbeta CateninBlastulaMice, TransgenicCell PolarityUrochordataCompound Eye, ArthropodEmbryonic StructuresHigh Mobility Group ProteinsGenes, HelminthProsencephalonOrganizers, EmbryonicPAX2 Transcription FactorNuclear ProteinsXenopus laevisGene Regulatory NetworksMembrane Proteins