MesencephalonMetencephalonDiencephalonBrain Tissue TransplantationOtx Transcription FactorsReceptor, EphA8DopamineSubstantia NigraTyrosine 3-MonooxygenaseRed NucleusFibroblast Growth Factor 8Fetal Tissue TransplantationNeuronsBrainGene Expression Regulation, DevelopmentalSuperior ColliculiTelencephalonNuclear Receptor Subfamily 4, Group A, Member 2Wnt1 ProteinChick EmbryoRhombencephalonNerve Tissue ProteinsBrain StemHomeodomain ProteinsOxidopaminePonsIn Situ HybridizationProsencephalonHydroxydopaminesCorpus StriatumParkinson DiseaseDopaminergic NeuronsFibroblast Growth FactorsImmunohistochemistryCerebellumCentral Nervous SystemTranscription FactorsAxonsBody PatterningNeural CrestZebrafish ProteinsNeural PathwaysCell DifferentiationMice, TransgenicCells, CulturedEmbryonic and Fetal DevelopmentStem CellsWnt ProteinsEmbryo, NonmammalianEmbryo, MammalianTime FactorsTrans-ActivatorsRats, Sprague-DawleyRNA, MessengerCatsTissue DistributionSpinal CordDNA-Binding ProteinsPregnancyMice, Inbred C57BLMolecular Sequence DataRats, Inbred Strains