Fig. 3

PMSCs-derived exosomes improved cardiac function and myocardial infarction (MI) area of mice with MI. a Representative images of echocardiograms in diverse groups. b Determination of LVDd, RVDd, LVEF, LVFS, LVEDV, RVEDV and LVPWd of mice in each group by echocardiography. Data were expressed as mean ± SD. **P < 0.01, ***P < 0.001 versus sham. ^#P < 0.05, ^##P < 0.01 versus model. c Exosomes secreted by PMSCs reduced myocardial infarction area of mice with MI. Myocardial tissue was stained in red and collagen fibers were stained in blue by Masson staining. Data were expressed as mean ± SD. *P < 0.05, **P < 0.01