Photo 1: a; Acute myocardial infarction for some ten days have passed since the heart was attacked. Necrotic muscle fibers and vanished nuclei of heart muscle cells are seen. Marked increased capillary vessels and fibroblasts is observed.(AZAN-MALLORY. X 40) b; Old myocardial infarction. Dense growth of collagen fiber which is parallel to the muscle fibers is observed.
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