Neuroepithelial CellsNeoplasms, NeuroepithelialOptic Lobe, NonmammalianNeuroepithelial BodiesChick EmbryoCell DifferentiationTelencephalonNervous SystemNeuronsCentral Nervous SystemStem CellsNeural TubeGene Expression Regulation, DevelopmentalEpithelial CellsNestinEpitheliumZebrafishRhombencephalonHedgehog ProteinsGillsCell PolarityNeural CrestNeurogliaMorphogenesisDiencephalonNeurogenesisNerve Tissue ProteinsKinetinEmbryo, MammalianIntermediate Filament ProteinsCoturnixSpinal CordNeocortexNeuroectodermal Tumors, Primitive, PeripheralIn Situ HybridizationRetinaNeoplasms, Nerve TissueOligodendrogliaReceptors, NotchNeural Stem CellsBrainCells, CulturedAstrocytesImmunohistochemistryCell MovementEmbryo, NonmammalianAdherens JunctionsGangliogliomaMesencephalonCell DivisionZebrafish ProteinsElectroporationEmbryonic DevelopmentSOXB1 Transcription FactorsBromodeoxyuridineEmbryonic and Fetal DevelopmentCell LineageHomeodomain ProteinsOptic NerveCell ProliferationBody PatterningEmbryonic Stem CellsGreen Fluorescent ProteinsSignal TransductionTrans-ActivatorsCerebral CortexTranscription FactorsBrain NeoplasmsMice, TransgenicMicroscopy, FluorescenceTeratomaMembrane ProteinsMice, Inbred ICRDrosophila ProteinsNeurosecretory SystemsMicroscopy, Confocal