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DNA repair and antioxidant gene expression in nonmalignant skin tissues of control subjects and BCC tissues. Gene expression was evaluated by real-time PCR with the 2−ΔΔCt method. The data are presented as the fold change in gene expression normalized to GAPDH. Values given are mean ± SD. The statistical significance of differences between the control and case was evaluated by nonparametric variables with Mann Whitney U test. ∗∗∗ P < 0.001 compared to control.
