title: Ultrastructural changes in muscle in spinal muscular atrophy. Werding-Hoffmann's disease.
mesh_terms: D001485:Basement Membrane; D001706:Biopsy; D002675:Child, Preschool; D003711:Demyelinating Diseases; D004576:Electromyography; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008854:Microscopy, Electron; D009046:Motor Neurons; D009121:Muscle Denervation; D009132:Muscles / Q000196:embryology / Q000473:pathology*; D009133:Muscular Atrophy / Q000196:embryology / Q000235:genetics* / Q000473:pathology; D009410:Nerve Degeneration; D013577:Syndrome