Figure 3From: Glutathione S-transferase omega in the lung and sputum supernatants of COPD patientsThe GSTO1-1 immunoreactivity was most prominent in alveolar macrophages varying from negative to moderate/intense and GSTO1-1 expression was either absent or weak in other cell types. Alveolar epithelium was always positive in stage IV COPD. Bars represent means, error bars standard error of mean.Back to article page