Figure 6.

Histological appearance of C57 BI/6 and pallid mouse lungs 21 days following bleomycin challenge. Histologic sections from lungs of a C57BI/6 (A and C) and pallid (B) mouse at 21 days after bleomycin. The emphysematous lesions within or adjacent to the fibrotic areas appear to be mainly of the paracicatricial type (A and B). Nevertheless, several areas of emphysema can be detected quite distant from the fibrotic zones (C). (A) and (C): Hematoxylin-eosin stain, scale bar represents 400 μm. (B): Masson's trichrome stain, scale bar represents 400 μm.