Fig. 6.

Enzyme-linked immunosorbent assays for IL-6 (A), CRP (B), and MCP-1 (C) were carried out for assessment of systemic inflammation. Samples with analyte levels below the level of quantification and above the level of detection were assigned the value LOQ/2. Significance was assessed by comparing outcomes with a two-tailed t-test assuming equal variance between groups. Data are presented as mean ± SEM, n = 7–9, *Significantly different (p < 0.05) from filtered air controls; ^TTrending difference (p ≤ 0.10) from filtered air controls