ProsencephalonTelencephalonHoloprosencephalyMesencephalonChick EmbryoDiencephalonGene Expression Regulation, DevelopmentalHomeodomain ProteinsNerve Tissue ProteinsBody PatterningIn Situ HybridizationPaired Box Transcription FactorsNeuronsNeocortexCerebral CortexLIM-Homeodomain ProteinsZebrafishZebrafish ProteinsStem CellsHedgehog ProteinsCanariesTranscription FactorsNeurogenesisFibroblast Growth Factor 8Eye ProteinsBrain Tissue TransplantationVocalization, AnimalEmbryo, MammalianBrainOlfactory BulbMice, Mutant StrainsInterneuronsBasic Helix-Loop-Helix Transcription FactorsThalamusCell MovementS100 Calcium Binding Protein GNeural Stem CellsMedian EminenceBromodeoxyuridineAnseriformesFinchesRepressor Proteins