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Effects of NAC on HHDMNQ-induced oxidative stress for apoptosis in A549 cells. (a–e) Expression levels of p38, ERK, JNK, STAT3, NF-κB, and IκB-α were analyzed by western blot and quantitative histograms of proteins (∗p < 0.05, ∗∗p < 0.01, ∗∗∗p < 0.001).
