<p>AdGFP (STZ/AdGFP) and AdNMB (STZ/AdNMB) were injected into the penises of STZ-induced diabetic rats and the penises were harvested for protein extraction 4 weeks later. Age-matched non-diabetic rats were used as positive controls (PC). Western blot analysis was performed to detect the expression of VE-Cad, total eNOS (T-eNOS), phospho-eNOS (P-eNOS), SMA, and nNOS. (A) The representative images of the expression of VE-Cad, total eNOS, phospho-eNOS, SMA, and nNOS are shown. (B) Bar graphs comparing the expression levels of VE-Cad, total eNOS, phospho-eNOS, SMA, and nNOS among the groups (n = 4 per group). * and **: P<0.05 and P<0.01, respectively vs. AdGFP-injected diabetic rats.</p