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Definition of aggregate regions based on myocardial infarction (MI) location. A and B: representative left ventricular (LV) circumferential section cut across the central portion of the MI and stained with triphenyltetrazolium chloride showing the agreement between the designated aggregate MI region, border zone, and remote region at 28 days post-MI. The jagged line represents the edges of the MI region. AS, anterior septum; S, septal; I, inferior; P, posterior; L, lateral; A, anterior.
