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Figure 5: Inhibition of PM10-induced IL-1β release in THP-1-derived macrophages by NAC. The cells were pretreated with 15 mM NAC (+) and then incubated with summer PM10 (2.5 μg/cm2) for 6 h. Results are the mean and s.d. of at least three independent experiments. versus CTRL, versus summer Milan PM10.