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OSM treatment improved cardiac function after MI. Echocardiographic analysis of cardiac (a) ejection fraction, (b) fraction shortening, (c) left ventricular internal diastolic diameter (LVIDd), and (d) left ventricular internal systolic diameter (LVIDs) in the six groups of mice 28 days after operation. The values are means ± SD. * P < 0.05 versus WT group, # P < 0.05 versus WT + MI group, and ※ P < 0.05 versus Oβ −/−S group. N = 18 in each group.
