C-C chemokine receptor type 3 antagonist reduces the degree of reactive oxygen species (ROS) production induced by light exposure. (A) ROS production was measured by a ROS detecting probe. Light exposure induced the ROS production, and a CCR3 antagonist, SB 328437, reduced the production in a concentration-dependent manner. N -acetylcystein (NAC) was used for a positive control. (B) NAC treatment suppressed the phosphorylation of NF-κB induced by light exposure. Data are expressed as mean ± SEM ( n = 4 to 6). ## indicates P