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Effect of blue light irradiation on the expression of Ly6G (A,B), CXCR1 (A,C), citH3 (D), and PAD4 (E) and on skin levels of neutrophil elastase (F) and ROS (G). We performed immunostaining to examine the expression of Ly6G, CXCR1, citH3, and PAD4. Skin levels of neutrophil elastase and ROS were measured using a commercial kit. The values are expressed as means ± SD derived from five animals. * p < 0.05; ** p < 0.01. Scale bar = 100 μm.
