title: Certain histopathological and ultrastructural patterns of primary cardiomyopathy as evidenced by percutaneous myocardial biopsy.
mesh_terms: D001707:Biopsy, Needle; D006328:Cardiac Catheterization; D009202:Cardiomyopathies / Q000175:diagnosis / Q000473:pathology*; D004562:Electrocardiography; D006801:Humans; D008297:Male; D008854:Microscopy, Electron; D008875:Middle Aged; D009206:Myocardium / Q000473:pathology / Q000648:ultrastructure*