title: An aged case of trifascicular block with special reference to a histological study of the conduction system.
mesh_terms: D000368:Aged; D002037:Bundle-Branch Block / Q000473:pathology; D004562:Electrocardiography; D005260:Female; D006327:Heart Block / Q000150:complications / Q000000981:diagnostic imaging / Q000473:pathology* / Q000503:physiopathology; D006329:Heart Conduction System / Q000473:pathology*; D006801:Humans; D006973:Hypertension / Q000150:complications; D011859:Radiography