Fig. 4

Pathological injury and the infarct size of cardiac tissues in MI mice with miR-325-3p dysregulation. a Representative images of cardiac tissues stained with H&E. b Representative images of cardiac tissues stained with Masson’s trichrome. The myocardial fibers and collagen are colored blue. c Representative images of cardiac tissues that were stained with TCC. d The comparison of infarct size among the groups. **P < 0.01 compared to the mice that received the sham operation, ^#P < 0.05 compared to MI mice. MI, myocardial infarction; agomiR-325-3p, miR-325-3p agomir; antagomiR-325-3p, miR-325-3p antagomir; agomiR-control, scrambled agomir or antagomir control; H&E, hematoxylin and eosin; TCC, tetrazolium chloride