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Figure 1 (A) Representative hematoxylin-eosin-stained midventricular cross-sections of myocardial infarction rats treated with saline (MI/C) and myocardial infarction treated with romurtide (MI/Ro) on day 14. (B) Expansion index on day 14 in MI/C and MI/Ro (n = 4 per group). Values are mean ± SEM. *p < 0.05 versus MI/C.