Figure S1. Immunohistochemistry staining of CSE, CBS and MPST in bronchial biopsies from non-smokers, smokers and COPD patients. Photomicrographs showing representative photomicrographs of cystathionine-γ-lysase (CSE), cystathionine-β-synthase (CBS) and 3-mercaptopyruvate sulphur transferase (MPST) staining in the bronchial mucosa from control non-smokers, control smokers with normal lung function and mild/moderate COPD patients. Immune-stained airway smooth muscle cells are indicated by brown staining. Results are representative of those from 13 non-smokers, 14 smokers with normal lung function, 15 mild/moderate COPD patients. Calibration bar represents 20 μm. Graphical representation of the results are shown in the right hand panels. (JPG 332 kb
