Spinal CordSpinal Cord InjuriesInjectionsSciatic NerveSpinal NervesPeripheral NervesInjections, SpinalSpinal Nerve RootsNerve FibersOptic NerveNerve RegenerationSpinal Cord DiseasesAnesthesia, SpinalNerve BlockPeripheral Nerve InjuriesSpinal CanalSpinal Cord NeoplasmsNerve EndingsTibial NerveSural NerveSpinal DiseasesMedian NerveNerve CrushSpinal Cord CompressionFacial NerveSpinal NeoplasmsInjections, IntravenousUlnar NerveInjections, IntramuscularSpinal StenosisFemoral NerveSpinal FusionRats, Sprague-DawleyMotor NeuronsGanglia, SpinalNerve Growth FactorsPhrenic NerveTrigeminal NerveNerve Growth FactorInjections, SubcutaneousInjections, IntralesionalInjections, Intra-ArticularNerve Compression SyndromesAxonsCranial NervesSpinal InjuriesMuscular Atrophy, SpinalRadial NerveElectric StimulationNerve TissueSpinal Cord IschemiaInjections, IntraperitonealMandibular NerveNeural ConductionDisease Models, AnimalOphthalmic NerveNeurons, AfferentInjections, EpiduralNerve Fibers, MyelinatedPainSplanchnic NervesHyperalgesiaInjections, IntraventricularSpinePosterior Horn CellsThoracic VertebraeParaplegiaCatsCochlear NerveThoracic NervesPain MeasurementTuberculosis, SpinalLaminectomySympathetic Nervous SystemGlossopharyngeal NerveInjections, IntradermalLumbar VertebraeNeuralgiaCervical VertebraeNerve Tissue ProteinsOptic Nerve InjuriesTime FactorsReflexAnesthetics, LocalRats, WistarNerve DegenerationLumbosacral RegionOptic Nerve DiseasesSpinal CurvaturesInjections, Intra-ArterialHematoma, Epidural, SpinalAfferent PathwaysAbducens NerveOculomotor NervePeripheral Nervous System DiseasesAccessory NerveDose-Response Relationship, DrugNerve Fibers, UnmyelinatedFacial Nerve InjuriesAction Potentials