Fig. 7From: Fine particulate matter contributes to COPD-like pathophysiology: experimental evidence from rats exposed to diesel exhaust particlesOxidative stressor concentrations. As compared to filtered air control, the serum levels of 8-OHdG increased significantly in rats exposed to DEP for 4-wk or 8-wk (** p < 0.01, *** p < 0.001, A). Exposure of rats to DEP for 3 durations resulted in significant increases of serum MDA levels, as compared to the control, respectively (* p < 0.05, *** p < 0.001, B). Data were expressed as mean (95% CI)Back to article page