Measurement of ROS intensity in (a, e) A498 and (c, g) ACHN cells. Measurement of intracellular ROS intensity in BCA-treated A498 and ACHN cells cotreated with NAC also measured. (b, d, f, and h) The bar graph indicated that the percentage of control of MFI according to treatment of BCA and NAC. (i) The cell viability of A498 and ACHN cells in response to control, BCA, NAC, and cotreatment of BCA and NAC.∗indicated the p value between the control and BCA treatment group, and # indicated the p value between NAC and NAC/BCA cotreatment group. Significant differences between BCA treat and DMSO control groups are indicated as ∗ (∗ means p < 0.05, ∗∗ means p < 0.01).