extremely significantp < 0.01
As shown in Figure 6 , compared with the control group, an extremely significant increase by 6.15 folds in MDA was observed in PC12 cells exposed to 200 μM H 2 O 2 for 4 h ( p < 0.01).
As shown in Figure 6 , compared with the control group, an extremely significant increase by 6.15 folds in MDA was observed in PC12 cells exposed to 200 μM H 2 O 2 for 4 h ( p < 0.01).