AxotomySciatic NerveFacial Nerve InjuriesFacial NerveNerve RegenerationMotor NeuronsOptic Nerve InjuriesSciatic NeuropathyGanglia, SpinalNerve CrushPeripheral NervesRetinal Ganglion CellsAxonsPeripheral Nerve InjuriesOptic NerveNerve BlockNerve FibersSchwann CellsCell SurvivalDenervationNeural ConductionTibial NerveWallerian DegenerationSpinal NervesRats, Sprague-DawleyNeurons, AfferentMyelin SheathNerve Compression SyndromesNerve Growth FactorsAxonal TransportFemoral NerveSural NerveNerve EndingsNeuralgiaSpinal Nerve RootsGAP-43 ProteinRetrograde DegenerationSpinal CordNerve Growth FactorPeripheral Nervous System DiseasesNerve TissueNerve DegenerationHyperalgesia