Figure 5.

(Hematoxylin and eosin staining.) (a) Normal histoarchitecture of lung 200x. (b) Bleomycin-treated lung showing thickening of alveolar septa with hemorrhages and marked exphysematous change 200x. (c) Bleomycin-treated lung showing severe thickening of alveolar septa with fibroblast proliferation and infiltration of foamy macrophages and mononuclear cells 400x. (d) Quercetin-treated lungs showing mild to moderate thickening of alveolar septa 200x. (e) Quercetin-treated lungs showing mild thickening of alveolar septa with few inflammatory cells 400x.