title: Normal structure.
mesh_terms: D006332:Cardiomegaly / Q000473:pathology; D002312:Cardiomyopathy, Hypertrophic / Q000473:pathology; D004108:Dilatation, Pathologic; D006321:Heart / Q000503:physiopathology*; D006331:Heart Diseases / Q000473:pathology* / Q000503:physiopathology*; D006339:Heart Rate; D006349:Heart Valve Diseases / Q000503:physiopathology; D006801:Humans; D009206:Myocardium / Q000473:pathology / Q000648:ultrastructure