title: Ultrastructural studies of myocardial biopsies in 45 patients with obstructive or congestive cardiomyopathy.
mesh_terms: D000328:Adult; D000368:Aged; D001706:Biopsy; D006332:Cardiomegaly / Q000473:pathology; D009202:Cardiomyopathies / Q000473:pathology; D005260:Female; D006331:Heart Diseases / Q000473:pathology*; D006333:Heart Failure / Q000473:pathology; D006801:Humans; D008297:Male; D008854:Microscopy, Electron; D008875:Middle Aged; D009206:Myocardium / Q000473:pathology* / Q000648:ultrastructure; D009210:Myofibrils / Q000648:ultrastructure