Fig. 3

Assessment of myocardial capillary density: Panel a to c demonstrate the representative images of CD31-stained myocardial tissue sections. a: Non-radiated control; b: Radiation; c: Radiation + Ac-SDKP treatment. Endothelial cells are stained with brown staining. d: Quantification of CD31 positive cells in control and radiated rats with and without Ac-SDKP therapy. N = 7–10 each group, *, p < 0.001 rad vs. control, †, p < 0.001 rad vs. rad + Ac-SDKP. Rad, radiation. Scale bar: 20 μm, magnification × 400