Fig. 4

a Human Act1 expression in BECs was determined by real-time PCR. The Act1 expression substantially increased after OVA treatment and PPA significantly decreased Act1 expression in BECs treated by OVA. b Human NF-kappa B (western blot) and A20 expression (real-time PCR) assay. Data are means ± SE of 4 experiments (**P < 0.01 vs. normal BECs group; ^## P < 0.01 vs. OVA group)