Fig. 2
Changes in expression of pro- and anti-apoptotic markers following exposure to diesel exhaust and air. Graphs showing the percentage change in epithelial expression of the pro-apoptotic markers Bad and Bak; the anti-apoptotic marker Bcl-2; the death receptor Fas; the caspase cleavage product p85 PARP; and the proliferation marker Ki67 in the bronchial epithelium of healthy controls (●), allergic rhinitics (
) and asthmatics on β2 agonists (
) and on inhaled corticosteroids (
) 18 h after a 2 h exposure to diesel exhaust (100 μg/m3) compared to filtered air. Median values (−) for each group and significant p values are shown