Research Article

Study on Lung Injury Caused by Fine Particulate Matter and Intervention Effect of Rhodiola wallichiana

Figure 2

Comparisons of IL-6, IL-1β, TNF-α, 8-OHdG, 4-HNE, and PCC in the rat serum of each group; cytokine level is described as mean ± SD (n = 10); the same letters indicate nonstatistical differences, ; different letters indicate statistical differences, .