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. Author manuscript; available in PMC: 2014 Feb 1.
Published in final edited form as: Environ Res. 2012 Nov 8;121:31–38. doi: 10.1016/j.envres.2012.10.003

Figure 1.

Figure 1

Figure 1

Figure 1.1 Relationship of traffic-related PAH emissions and glutathione levels (mg/dl packed red blood cells) among all participants

Figure 1.2 Relationship of traffic-related PAH emissions and glutathione peroxidase levels (IU/liter) among all participants

The spline regression indicated that higher traffic-related PAH exposure tended to be associated with increased glutathione peroxidase and decreased glutathione.