Figure 4: Effect of SkQ1 on the leukocyte composition of granulation tissue in diabetic mice. Representative images of the (a) H&E-stained and (b) f4/80-immunostained granulation tissue at the 7th day of wound healing. (c) Neutrophil and (d) macrophage (F4/80-positive cells) infiltration of the granulation tissue. Data are presented as mean ± SEM; for SkQ1-treated versus untreated diabetic mice. for the untreated diabetic mice versus nondiabetic mice.