Fig. 6From: Exposure to ambient particulate matter alters the microbial composition and induces immune changes in rat lungLung morphological changes following a 4-week exposure to particulate matter. (a and c) Representative images of lung sections from rats exposed to clean air (CON), biomass fuel (BMF), and motor vehicle exhaust (MVE). b and d Changes in mean linear intercepts and ratio of wall area to total bronchial area in lung sections from rats exposed to CON, BMF, and MVE. Results are expressed as mean ± SEM; n = 5 rats. No significant changes were observed between groupsBack to article page