Neuronal Apoptosis-Inhibitory ProteinSpinal Muscular Atrophies of ChildhoodMuscular Atrophy, SpinalSMN Complex ProteinsSurvival of Motor Neuron 1 ProteinX-Linked Inhibitor of Apoptosis ProteinInhibitor of Apoptosis ProteinsNerve Tissue ProteinsApoptosisGene DeletionCaspasesCaspase 3Proto-Oncogene Proteins c-bcl-2Caspase InhibitorsCyclic AMP Response Element-Binding ProteinApoptosis Regulatory ProteinsCASP8 and FADD-Like Apoptosis Regulating ProteinIn Situ Nick-End LabelingNeuronsNeutrophilsCaspase 9bcl-2-Associated X ProteinCell Line, TumorSignal TransductionCells, CulturedCell SurvivalDNA FragmentationCaspase 8Enzyme ActivationMitochondriaCytochromes cApoptosis Inducing FactorBlotting, Westernbcl-X Protein