Figure 2. Body weight changes of rats during the exposure period.

Body weight in the normal chow diet (NCD), high-cholesterol diet (HCD) and O3FA group after 6 weeks (A) and 12 weeks (B) of PM2.5 exposure is shown. Data are presented as mean ± SE; n = 9 rats/group. ^*p < 0.05, ^***p < 0.001 compared to the filtered air group; ^★p < 0.05, ^★★p < 0.01 compared to the normal chow diet group; ^#p < 0.05, ^##p < 0.01 as compared to the high-cholesterol diet group.