Fig. 5.
BaP promotes inflammation in alveolar type II cells. (A) Organic tracer analysis of PM2.5. (B) Levels of inflammatory cytokines in the supernatants of A549 cells. The A549 cells were treated with control or BaP (4 μM) for 24 h (n = 6). (C) Western blot analysis (right panel) and quantitation (left panel) of NOS2 protein in A549 cells. A549 cells were treated with control or BaP (4 μM) for the indicated hours (n = 3). (D) Western blot analysis (right panel) and quantitation (left panel) of NOS2 protein in A549 cells. A549 cells were treated with control or the indicated doses of BaP for 24 h (n = 3). All of the data are presented as the means ± SEM. (B) Two-tailed Student's t-test: * P < 0.05, ** P < 0.01 compared with the control group. (C, D) One-way ANOVA with Tukey's correction: * P < 0.05 compared with the control group.