Fig. 4
From: Influence of chlorpyrifos exposure on UVB irradiation induced toxicity in human skin cells
ROS production after CPS and/or UVB exposure of HaCaT cells (A) and BJ cells (B). a denotes statistically significant difference from control (cells not treated with CPS nor UVB), b denotes statistically significant difference between CPS and UVB treated cells and UVB treatment alone. The two-way ANOVA and post-hoc comparison by Bonferroni test, P < 0.05. Mean ± SD (n = 3). CPS, chlorpyrifos