Nemaline myopathy.
D002648:Child; D002675:Child, Preschool; D003937:Diagnosis, Differential; D004576:Electromyography; D006801:Humans; D008297:Male; D008854:Microscopy, Electron; D009132:Muscles / Q000473:pathology; D009135:Muscular Diseases / Q000473:pathology*; D009210:Myofibrils