Fig. 3. PDT inhibited the expression of pro-inflammatory factors. (A) The expression of iNOS, IL-12, and TNF-α at different treatment times (n = 3). (B) Western blotting analysis of iNOS, IL-12, and TNF-α with different treatments at 12 h (n = 3). (C) The effect of 3-MA on the expression of iNOS, IL-12, and TNF-α at 12 h after PDT (n = 3). (D) The secretion levels of iNOS, IL-12, and TNF-α in cell supernatant with different treatment at 12 h (n = 10). * P<0.05, ** P<0.01, *** P<0.001 vs control group, ^# P<0.05, ^## P<0.01, ^### P<0.001 vs PDT group.