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. 2018 Sep 21;16(6):4553–4561. doi: 10.3892/etm.2018.6785

Figure 2.

Figure 2.

Morphological alterations of the lung tissue, detected by hematoxylin and eosin staining. (A) Lung tissue of non-smoking without COPD group (magnification, ×100); (B) lung tissue of smoking without COPD group (magnification, ×100); (C) lung tissue of smoking COPD group (magnification, ×100); (D) airway tissue of non-smoking without COPD group (magnification, ×400); (E) airway tissue of smoking without COPD group (magnification, ×400); and (F) airway tissue of smoking COPD group (magnification, ×400). COPD, chronic obstructive pulmonary disease.