Spinal CordSpinal Cord InjuriesInjectionsInjections, SpinalSpinal NervesAnesthesia, SpinalSpinal Cord DiseasesSpinal Nerve RootsInjections, IntravenousSpinal Cord NeoplasmsSpinal CanalSpinal DiseasesSpinal Cord CompressionInjections, IntramuscularSpinal NeoplasmsSpinal StenosisSpinal FusionInjections, SubcutaneousRats, Sprague-DawleyInjections, Intra-ArticularInjections, IntralesionalSpinal InjuriesMuscular Atrophy, SpinalInjections, IntraperitonealTime FactorsGanglia, SpinalSpinal Cord IschemiaMotor NeuronsDisease Models, AnimalInjections, EpiduralInjections, IntraventricularSpineInjections, IntradermalParaplegiaThoracic VertebraeTuberculosis, SpinalPainPosterior Horn CellsLumbosacral RegionLaminectomySpinal CurvaturesInjections, Intra-ArterialLumbar VertebraeTreatment OutcomePain MeasurementCervical VertebraeHematoma, Epidural, SpinalRats, WistarHyperalgesiaIntravitreal InjectionsSpinal Muscular Atrophies of ChildhoodInjections, JetSpinal FracturesAnesthetics, LocalRadiation DosageLethal Dose 50Drug Administration ScheduleInjections, IntraocularNeuronsSpinal Cord RegenerationMicroinjectionsTrigeminal Nucleus, SpinalDose-Response Relationship, DrugEpidural SpaceQuadriplegiaAxonsLocomotionNociceptorsAdministration, OralBehavior, AnimalAnalgesicsCatsElectric StimulationNeuralgiaRecovery of FunctionManipulation, SpinalReflexMorphineHindlimbMagnetic Resonance ImagingDouble-Blind MethodMotor ActivityMice, Inbred C57BLMyelographyAnterior Horn CellsBrainImmunohistochemistrySpinal PunctureRats, Inbred StrainsRabbitsFlow Injection AnalysisCordotomyNerve RegenerationAfferent PathwaysRadiometryNeurons, AfferentPhysical StimulationLidocaineAnalgesics, OpioidAnimals, Newborn