Spinal CordNerve EndingsSpinal Cord InjuriesSpinal Cord DiseasesSpinal Cord CompressionSpinal Cord NeoplasmsSciatic NerveNerve FibersPeripheral NervesMotor NeuronsSpinal NervesNerve RegenerationSpinal Nerve RootsSpinal Cord IschemiaInjections, SpinalNeurons, AfferentParaplegiaAxonsOptic NerveSynaptosomesElectric StimulationPituitary Gland, PosteriorMechanoreceptorsRats, Sprague-DawleySpinal Cord RegenerationCatsSensory Receptor CellsGanglia, SpinalSpinal CanalPeripheral Nerve InjuriesCervical VertebraeAfferent PathwaysSpinal NeoplasmsAnesthesia, SpinalQuadriplegiaTibial NerveTrigeminal NerveThoracic VertebraeNeural ConductionPhrenic NerveNociceptorsNerve BlockSympathetic Nervous SystemNeurosecretionSpinal DiseasesNerve CrushNeuromuscular JunctionPosterior Horn CellsSural NerveUmbilical CordLaminectomyNeuronsMedian NerveSubstance PRecovery of FunctionCapsaicinPainLumbosacral RegionReflexFacial NerveNerve Tissue ProteinsNerve Growth FactorsSpinal StenosisPhysical StimulationLocomotionUlnar NerveSpinal Cord StimulationImmunohistochemistrySpinal FusionSpinal InjuriesSynaptic TransmissionAction PotentialsNerve TissueMuscle SpindlesFemoral NerveAcetylcholineAnterior Horn CellsNeuralgiaHindlimbCordotomyHyperalgesiaNorepinephrineMyelitisMicroscopy, ElectronCalcitonin Gene-Related PeptideDisease Models, AnimalDenervationRats, WistarNerve DegenerationNerve Fibers, MyelinatedTime FactorsMerkel CellsMotor EndplateParalysisNeurons, EfferentNerve Growth FactorElectrophysiologyNeurotransmitter AgentsNerve Compression SyndromesMuscular Atrophy, Spinal