Figure 1 | Laboratory Investigation

Figure 1

From: LL-37 secreted by epithelium promotes fibroblast collagen production: a potential mechanism of small airway remodeling in chronic obstructive pulmonary disease

Figure 1

Airway wall thickness of non-smokers, smokers, and smokers with COPD. (a) Representative photomicrographs of hematoxylin–eosin staining in small airways from non-smokers (A), smokers (B), and smokers with COPD (C) (all images are × 400 magnification, scale bars=50 μm). (b) Airway wall thickness calculated as the total airway wall area (WAt) normalized to the squared length of the basement membrane (Pbm) in subjects of different groups. *P<0.01, compared with non-smokers.

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