Figure 7. The downregulation of circFASTKD1 ameliorates myocardial infarction. (A) Fast Green and Sirius Red staining to mark the myocardium (green) and scar (red) in each group. (B) CD31 staining showing the microvessel density in each group. (C, D) Immunohistochemical staining showing the expression of LATS1 (C) and LATS2 (D) in myocardial tissue from the different groups. (E–G) Quantification of the scar size (E), left ventricular EF% (F) and left ventricular FS% (G) in the different groups. Data are presented as the mean of three experiments, and the error bars represent the SD (*P<0.05 and **P<0.01).