Fig. 3

The protein expression of NF-κB in bronchial epithelial cells. Bronchial epithelial cells were inhibited NF-κB, and then stimulated by cigarette smoke extract (CSE) or/and IL-17A. NF-κB expression was measured using Western blotting. In CSE group and IL-17A group, NF-κB expression was increased when compared with controls. NF-κB expression was highest in CSE + IL-17A group. When NF-κB was inhibited, NF-κB expressions in all group were significantly reduced. a Western blotting. b Quantitation of protein bands