[Ultrastructural studies on myopathy and polymositis (author's transl)].
D000293:Adolescent; D000328:Adult; D006801:Humans; D008297:Male; D008875:Middle Aged; D009132:Muscles / Q000648:ultrastructure; D009135:Muscular Diseases / Q000473:pathology*; D009220:Myositis / Q000473:pathology*