Motor NeuronsSpinal CordMotor Neuron DiseaseNeuronsAxonsChick EmbryoMuscular Atrophy, SpinalAmyotrophic Lateral SclerosisSpinal NervesNerve Tissue ProteinsNerve Growth FactorsSpinal Cord InjuriesSurvival of Motor Neuron 1 ProteinGene Expression Regulation, DevelopmentalCell DifferentiationNerve DegenerationCells, CulturedOligodendrogliaNeurofilament ProteinsEmbryo, MammalianNeurons, AfferentMotor ActivityRats, Sprague-DawleyMotor CortexLIM-Homeodomain ProteinsAcanthopanaxParalysisMice, TransgenicSurvival of Motor Neuron 2 ProteinEvoked Potentials, MotorDendritesDisease Models, AnimalZebrafishSuperoxide DismutaseSpinal Nerve RootsAnimals, NewbornImmunohistochemistryStem CellsHomeodomain ProteinsXenopusEmbryo, NonmammalianMuscle, SkeletalAction PotentialsAnterior Horn CellsBulbar Palsy, ProgressiveGreen Fluorescent ProteinsInterneuronsSMN Complex ProteinsElectric StimulationEmbryonic Stem CellsElectromyographyTranscription FactorsMutationSignal TransductionInjections, SpinalMice, Inbred C57BLGanglia, SpinalSpinal Cord DiseasesMice, KnockoutCell SurvivalSynaptic TransmissionLumbosacral RegionElectrophysiologyGrowth ConesLocomotionPyramidal TractsEfferent PathwaysSynapsesMolecular Motor ProteinsAnesthesia, SpinalNeuromuscular DiseasesTime FactorsSciatic NerveReflex, MonosynapticGanglia, InvertebrateNeuropilin-2Spinal Cord NeoplasmsHindlimbSpineMovementSpinal CanalSpinal Cord CompressionNeurogenesisSpinal DiseasesSensory Receptor CellsSpinal NeoplasmsCholinergic NeuronsNeural InhibitionExtremitiesSpinal Muscular Atrophies of ChildhoodAplysiaNeuromuscular JunctionPatch-Clamp TechniquesAnalysis of VarianceBrainPiperoxanDopaminergic NeuronsNeural PathwaysSemaphorinsSpinal Stenosis