Cell LineageCell DifferentiationStem CellsBody PatterningVulvaSignal TransductionDrosophila ProteinsEmbryo, NonmammalianDrosophilaCaenorhabditis elegansBasic Helix-Loop-Helix Transcription FactorsCaenorhabditis elegans ProteinsMorphogenesisMesodermEmbryonic InductionEctodermModels, BiologicalIn Situ HybridizationMutationZebrafish ProteinsReceptor, Notch1Animals, Genetically ModifiedEndodermBlastomeresNeuronsMice, TransgenicJuvenile HormonesNervous SystemDNA-Binding ProteinsPhenotypeNerve Tissue ProteinsWnt ProteinsMolecular Sequence DataRepressor ProteinsCells, CulturedGenes, HelminthMembrane ProteinsChick EmbryoBone Morphogenetic ProteinsNeural Stem CellsEmbryo, MammalianXenopus ProteinsCell ProliferationHelminth ProteinsNeural CrestCell DivisionGenes, HomeoboxGenes, InsectSense OrgansDrosophila melanogasterEmbryonic DevelopmentTime FactorsNeural PlateEyeHedgehog ProteinsWnt1 ProteinGreen Fluorescent ProteinsTrans-ActivatorsMice, Inbred C57BLEmbryonic StructuresInsect ProteinsAmino Acid SequenceNuclear ProteinsNeurogliaCentral Nervous SystemNotochordApoptosisLarvaImmunohistochemistryCell LineGerm CellsBase SequenceCell PolarityCell MovementOtx Transcription Factorsbeta CateninPhotoreceptor Cells, InvertebrateOrganogenesisPaired Box Transcription FactorsGerm LayersGene Expression RegulationMice, KnockoutTelencephalonRNA, MessengerT-Box Domain ProteinsSOXB1 Transcription FactorsSex Determination ProcessesFibroblast Growth FactorsEye ProteinsCell SurvivalBone Morphogenetic Protein 4Disorders of Sex DevelopmentMicroscopy, FluorescenceWingUrochordataRhombencephalonLIM-Homeodomain ProteinsRetinaTranscription, GeneticPluripotent Stem Cells