Spinal CordSpinal Cord InjuriesMotor NeuronsSpermatic CordNeuronsSpinal Cord DiseasesSpinal Cord CompressionSpinal Cord NeoplasmsAxonsRats, Sprague-DawleySpinal Cord IschemiaInjections, SpinalBrain ChemistryParaplegiaSpinal Nerve RootsSpinal NervesBrain InjuriesSpinal Cord RegenerationBrain NeoplasmsSpinal CanalSpinal NeoplasmsCervical VertebraeQuadriplegiaAnesthesia, SpinalBrainBrain MappingThoracic VertebraeSpinal DiseasesBrain StemMagnetic Resonance ImagingUmbilical CordPosterior Horn CellsLaminectomyRecovery of FunctionLumbosacral RegionNerve RegenerationLocomotionDisease Models, AnimalSpinal StenosisGanglia, SpinalSpinal Cord StimulationSpinal FusionSpinal InjuriesTime FactorsAnterior Horn CellsMyelitisCordotomyParalysisPainMuscular Atrophy, SpinalImmunohistochemistryMolecular Sequence DataHyperalgesiaNerve Tissue ProteinsElectric Stimulation TherapyNeuralgiaElectric StimulationMyelographyBrain EdemaAfferent PathwaysNeurogliaCentral Nervous SystemSpineBrain IschemiaEpidural SpaceAnimals, NewbornNeural PathwaysNeurons, AfferentUrinary Bladder, NeurogenicHindlimbNociceptorsReflexHematoma, Epidural, SpinalAstrocytesMyelin SheathBehavior, AnimalLumbar VertebraeAmino Acid SequenceInterneuronsLampreys