Figure 8
From: Allergic rhinitis and asthma: inflammation in a one-airway condition
Bronchial biopsies in asthma and chronic obstructive pulmonary disease. (a) Bronchial biopsy in a nonsmoker with mild asthma. Note thickening of the epithelial reticular basement membrane in comparison with (b). (b) Bronchial biopsy in a smoker with chronic obstructive pulmonary disease (alkaline phosphatase antialkaline phosphatase, original ×240). Reprinted with permission from Jeffery [66].