FIGURE 4.
The effects of COS on the viability, ROS contents, and the expressions of Nrf2 pathway of H2O2‐treated L02 cells. (a) Effects of gradient concentration H2O2 treatment on the viability of L02 cells. (b) Effects of COS on the ROS contents of H2O2‐treated L02 cells. (c) Effects of COS on the viability of H2O2‐treated L02 cells. (d) Effects of COS on the mRNA expressions of Nrf2. (e) Effects of COS on the protein expressions of Nrf2. (f‐h) Effects of COS on the mRNA expressions of NQO1, HO‐1 and CAT. *p < .05, **p < .01, compared with the control group; # p < .05, compared with the H2O2 treatment group