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. 2008 Feb 22;116(6):709–715. doi: 10.1289/ehp.11016

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EBC levels of 8-isoprostane (A) and nitrotyrosine (B) in healthy volunteers (n = 8) at 6 and 24 hr after exposure to CAPs or filtered air. (A) EBC levels of 8-isoprostane increased at both time points after CAPs exposure (ANOVA, p = 0.04, CAPS compared to filtered air). (B) Nitrotyrosine concentrations did not change significantly (ANOVA, p = 0.21). Values shown are mean ± SE.