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Figure 1.
Immunohistochemical staining for GST alpha in specimens from the central and peripheral lung of a non-smoker (A and B, respectively), a smoker (C and D), and patients with Stage I-II COPD (E and F) and Stage IV COPD (G and H). GST alpha was mainly located in the airway epithelium.
Harju et al. Respiratory Research 2008 9:80 doi:10.1186/1465-9921-9-80
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