SOD2 and skin basal cell carcinoma: In agreement with protein expression data, Figure 3 demonstrated that mRNA expressions of hOGG1 (0.85 ± 0.12-fold decrease, P < 0.001), CAT (0.88 ± 0.03-fold decrease, P < 0.001), GCLC (0.66 ± 0.09-fold decrease, P < 0.001), GCLM (0.40 ± 0.17-fold decrease, P < 0.001), GPx (0.76 ± 0.07-fold decrease, P < 0.001), Nrf2 (0.63 ± 0.02-fold decrease, P < 0.001), CuSOD (0.47 ± 0.13-fold decrease, P < 0.001), and MnSOD (0.65 ± 0.09-fold decrease, P < 0.001) were substantially lower in BCC tissues than in skin tissues of control subjects.