Fig. 6

H&E (a, b, c, d) and Masson (a’, b’, c’, d’) stained lung sections of mice which were exposed 50 μg FLG at different time points post exposure (a and a’ were control group at 1 day post exposure; b and b’ were 1 day post exposure; c and c’ were 7 days post exposure; d and d’ were 28 days post exposure). Sections were analyzed blindly and representative images selected from 6 mice per treatment group are shown. Blue arrows: cells in alveoli; red arrows: parenchymal; black arrows: interstitial edema