Fig. 4

Effect of Ac-SDKP on coronary vascular fibrosis induced by radiation exposure: a to c show the representative images of Masson’s trichrome staining of rat coronary vessels in myocardial sections. a: Non-radiated baseline control; b: Radiation; and c: Radiation + Ac-SDKP treatment. Blue staining represents collagen. d: Quantification of perivascular collagen in control and radiation exposed rats with and without Ac-SDKP therapy. N = 8–10 each group, *, p = 0.01 rad vs. control, †, p = 0.04 rad vs. rad + Ac-SDKP. Rad, radiation. Scale bar: 100 μm, magnification × 100