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Transmural and submyocardial infarction. A and B: echocardiography and regular photo on transmural myocardial infarction (arrow). C and D: Masson's staining; ventricular wall is thinner and mostly replaced by scar tissue. E–H: submyocardial infarction (arrow). Left ventricular wall is thinner and fibrosis significantly increased, but muscle cells are mostly survived. ED, endocardium; EP, epicardium.
