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Fig. 4 | Respiratory Research

Fig. 4

From: The main rhinovirus respiratory tract adhesion site (ICAM-1) is upregulated in smokers and patients with chronic airflow limitation (CAL)

Fig. 4

Photomicrograph showing ICAM-1 expression. (a-b) lung alveolar epithelium. (c-d) submucosal glands. (a) Representative sections from a never smoker. (b) Typical COPD-smoker showing positive staining in alveolar epithelial cells (mainly type II). (c) normal lung function smoker. (d) COPD-smoker showing extensive ICAM-1 staining in submucosal glands. Magnification: A-B=x100; C-D=x200

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