Fig. 5From: Exposure to ambient particulate matter alters the microbial composition and induces immune changes in rat lungImmunoglobulin levels in bronchoalveolar lavage fluid following a 4-week exposure to particulate matter. (a) Levels of IgA. b Levels of IgG. c Levels of IgM. Results are expressed as mean ± SEM; n = 8 rats. CON, control group; BMF, biomass fuel exposure group; MVE, motor vehicle exhaust exposure group. *p < 0.05, **p < 0.01Back to article page