Endomyocardial biopsy.
D001706:Biopsy / Q000295:instrumentation; D006328:Cardiac Catheterization; D004562:Electrocardiography; D005069:Evaluation Studies as Topic; D006331:Heart Diseases / Q000175:diagnosis; D006801:Humans; D008297:Male; D008722:Methods; D008854:Microscopy, Electron; D008875:Middle Aged; D009206:Myocardium / Q000473:pathology*