Figure 6. Effect of SIF on the expression of proteins associated with oxidative stress. (A) Immunoblot bands of Nrf2, HO-1, NQO1 and n-Nrf2; Analysis of each band by optical density. (B) Nrf2, (C) n-Nrf2, (D) HO-1, (E) NQO1. The results are shown as the mean ±standard deviation (n=5 per group). *p < 0.05 or **p < 0.01 vs. the CON group, #p <0.05 or ##p <0.01 vs. the DM group.