title: A congenital myopathy of unknown origin.
abstract: Parallel with the clinical and histochemical investigations, an ultrastructural examination of a muscle biopsy specimen was made, in order to detect any slight cellular alterations which cannot possibly be discovered through any other methods, and to identify a muscle disease of unknown origin.
mesh_terms: D000273:Adipose Tissue / Q000473:pathology; D001706:Biopsy; D002675:Child, Preschool; D006651:Histocytochemistry; D006801:Humans; D008297:Male; D009135:Muscular Diseases / Q000151:congenital / Q000175:diagnosis / Q000209:etiology*; D009210:Myofibrils / Q000473:pathology