SOD2 and diabetes mellitus: In the groups of patients with DM (groups A and B), scarce colocalization between SOD2 and α-actin was observed (Figures 1(e) and 1(f), magnified areas ii), but a green labelling corresponding to SOD2 expression in nonmuscular cells, such as fibroblasts or endothelium, was found (Figures 1(e) and 1(f), magnified areas i).