Figure 10

Lung histology and immunohistochemical reaction for neutrophil elastase inDBA/2mice 3 months after chronic cigarette smoke exposure. Lung parenchyma from an air-exposed (A) and a smoke-exposed DBA/2 (B) mouse, at 3 months. Hematoxylin-eosin stain, scale bar represents 400 μm. (C) and (D): Immunohistochemical reaction for neutrophil elastase on alveolar septa of DBA/2 mouse at 3 months after cigarette smoke exposure in absence (C) or in presence of the primary antibody (D). Scale bar represents 25 μm.