Schwann CellsNeurogliaSciatic NerveMyelin SheathAxonsGlial Cell Line-Derived Neurotrophic Factor ReceptorsPeripheral NervesNeuronsNerve RegenerationAstrocytesCells, CulturedNerve Growth FactorsNerve Tissue ProteinsGlial Fibrillary Acidic ProteinPeripheral Nervous SystemGanglia, SpinalOligodendrogliaEarly Growth Response Protein 2ImmunohistochemistryMyelin P0 ProteinCentral Nervous SystemGlial Cell Line-Derived Neurotrophic FactorRetinaOctamer Transcription Factor-6Neuregulin-1Animals, NewbornBrainCell DifferentiationMyelin ProteinsWallerian DegenerationRats, Sprague-DawleyS100 ProteinsNeurofibromaGliosisRanvier's NodesProto-Oncogene Proteins c-retSpinal CordGlia Maturation FactorGlial Cell Line-Derived Neurotrophic FactorsDemyelinating DiseasesNeurilemmomaNeuregulinsPeripheral Nerve InjuriesMicroscopy, ElectronStem CellsNerve CrushCell CommunicationSciatic NeuropathyMice, TransgenicNerve Fibers, MyelinatedCoculture TechniquesOptic NerveS100 Calcium Binding Protein beta SubunitCell CountNeurturinRNA, MessengerCell MovementNestinGene Expression Regulation, DevelopmentalEpendymoglial CellsNeurofibromin 1Drosophila ProteinsMyelin Basic ProteinSOXE Transcription FactorsNerve DegenerationCerebral CortexNeurofilament ProteinsMice, Inbred C57BLMice, Neurologic MutantsNervous SystemEnteric Nervous SystemMice, KnockoutReceptors, Nerve Growth FactorRats, WistarNeuritesAxotomyCell SurvivalDisease Models, AnimalNeural CrestPeripheral Nervous System DiseasesCell DivisionCell Adhesion Molecules, NeuronalFluorescent Antibody TechniqueIn Situ HybridizationCell LineageCerebellumGliomaNeural Stem CellsTime FactorsGene Expression RegulationIntermediate Filament ProteinsJC VirusLamininMicroscopy, Electron, TransmissionAmino Acid Transport System X-AGLeechesAquaporin 4VimentinSignal TransductionNeuropeptides