Fig. 2
From: CD147 increases mucus secretion induced by cigarette smoke in COPD
CD147 and MUC5AC expression in airways in the lung specimens. Photomicrographs of brown staining show the expression of CD147 in non-smokers (a), smokers without COPD (b) and smokers with COPD (c). Photomicrographs of brown staining show MUC5AC secretion in non-smokers (d), smokers without COPD (e) and smokers with COPD (f). Scale bars = 50 μm. Integrated optical density (IOD)/area represents the expression of CD147 (g) and MUC5AC (h). #p < 0.05, compared with non-smokers, ##p < 0.05, compared with smokers without COPD. *p < 0.05, compared with non-smokers, **p < 0.05, compared with smokers without COPD