Figure 5

Histological appearance ofpallidandC57 Bl/6mouse lungs 14 days following bleomycin challenge. Representative lung histologic sections of a pallid (A) and a C57BI/6 (B) mouse at 14 days after bleomycin. Fibrotic and emphysematous areas are widely spread and intermixed. Emphysema is often located quite distant from the fibrotic reaction (A-B).(C) shows a higher magnification of (B). (A): Hematoxylin-eosin stain, scale bar represents 400 μm. (B) and (C): Masson's trichrome stain, scale bars represent 400 μm and 100 μm, respectively.