Fig. 2From: Compartmentalization of anti-oxidant and anti-inflammatory gene expression in current and former smokers with COPDmRNA levels of each target gene from each source. All pairwise comparisons of target gene transcript across the different cell types indicated significant (p < .0001) differences between sources except for Nrf2 expression in bronchial epithelium vs macrophages (p = 0.01); AKR1C3 in bronchial epithelium vs nasal epithelium (p = 0.74); and HO1 in bronchial epithelium vs peripheral blood mononuclear cells (p = 0.09)Back to article page