Fig. 7From: Impaired nuclear factor erythroid 2-related factor 2 expression increases apoptosis of airway epithelial cells in patients with chronic obstructive pulmonary disease due to cigarette smokingEffect of NAC pretreatment on CSE induced apoptosis. a Green fluorescent staining by caspase-3/7 reagent revealed apoptosis cells. The number of green fluorescent staining was decreased in 15 % CSE with 1.0Â mM NAC pretreatment. b Pretreatment with 0.1Â mM NAC did not decrease 15 % CSE induced apoptotic index, whereas pretreatment with 0.5, 1.0Â mM NAC significantly decreased 15 % CSE induced apoptotic indexBack to article page