Bioactivity of transduced TAT-SOD
into cultured HaCaT cells. (A) Total antioxidant capability, (B) SOD activity, (C) Superoxide scavenging activity of each group was detected respectively. Each bar in A, B and C represents the mean ± SEM obtained from three experiments. Double asterisks denote a statistically significant difference from control group at P < 0 .01.