Muscular Atrophy, SpinalSpinal Muscular Atrophies of ChildhoodSurvival of Motor Neuron 1 ProteinSMN Complex ProteinsSurvival of Motor Neuron 2 ProteinMuscular AtrophyAtrophyMotor NeuronsNeuronal Apoptosis-Inhibitory ProteinSpinal CordCyclic AMP Response Element-Binding ProteinRNA-Binding ProteinsAnterior Horn CellsNerve Tissue ProteinsRibonucleoproteins, Small NuclearDEAD Box Protein 20Muscular Disorders, AtrophicChromosomes, Human, Pair 5Bulbo-Spinal Atrophy, X-LinkedSpinal Cord InjuriesExonsCoiled BodiessnRNP Core ProteinsDisease Models, AnimalMotor ActivitySpinal Cord DiseasesMotor Neuron DiseaseEvoked Potentials, MotorMotor CortexPedigreeHeterozygote DetectionGlycine-tRNA LigaseMuscle, SkeletalPhenotypeElectromyographyGene DeletionMice, TransgenicNeuromuscular Junction DiseasesHomozygoteRNA SplicingNeuromuscular JunctionAxonsOptic AtrophyArthrogryposisMutationGene DosageNerve DegenerationContractureNeural ConductionCharcot-Marie-Tooth DiseaseFasciculationGenes, RecessiveNeuromuscular DiseasesSpinal Nerve RootsChemistry, AnalyticGenes, DominantPrenatal DiagnosisInjections, SpinalVocal Cord ParalysisGenetic LinkageMuscle WeaknessAmyotrophic Lateral SclerosisGenetic CounselingSpliceosomesAlternative SplicingRespiratory ParalysisSpinal NervesHereditary Sensory and Motor NeuropathyValproic AcidMolecular Sequence DataGenetic TestingInfant, NewbornMultiple System AtrophyAnesthesia, SpinalAclarubicinMolecular Motor ProteinsFibroblastsMuscular DystrophiesBase SequenceReceptors, AndrogenMutation, MissenseSpinal Cord NeoplasmsMusclesSpinal CanalGenetic TherapyHeLa CellsSpinal Cord CompressionHeterogeneous-Nuclear Ribonucleoprotein Group A-BSpinal DiseasesMuscle Strength DynamometerMagnetic Resonance ImagingRNA, MessengerPolymerase Chain ReactionSpinal NeoplasmsMice, KnockoutHeterozygoteTime FactorsGrowth ConesChromosome MappingDNA Mutational Analysis