Figure 12From: Is neutrophil elastase the missing link between emphysema and fibrosis? Evidence from two mouse modelsImmunohistochemical reaction for TGF-β and TGF-α 3 months after chronic cigarette smoke exposure. Lung parenchyma of a smoke-exposed DBA/2 mouse, at 3 months. (A) Immunohistochemical reaction for TGF-β. Counterstained with hematoxylin, scale bar represents 40 μm. (B) Immunohistochemical reaction for TGF-α. Counterstained with hematoxylin, Scale bar represents 15 μm.Back to article page