Changes in mRNA expression for IL-1β, caspase 1 and NLRP3 in the lung tissue after exposure to PM.

<p>Data are expressed as the mean ± SEM from 5–8 mice (n = 8, 7, 8 and 5 for Control, Sup, Pre and Sup+Pre groups, respectively). P for ANOVA is expressed in the upper portion of each figure. *P<0.05 and ***P<0.001 represent Tukey’s multiple-comparison test of each group compared with Sup plus Pre.