Fig. 7
Effect of longifolene on pro-inflammatory cytokine mRNA expression. Level of a IL-4, b IL-13. VE: vehicle, DMSO; NC: negative control, 1 μg/mL LPS-treated group; PC: positive control, 100 nM dexamethasone treated group, an oil (0.8 μg/mL) and longifolene (0.08 μg/mL). Values are presented as mean ± standard deviation. *p < 0.05 and **p < 0.01 compared with VE; and ##p < 0.01 compared with NC