Fig. 4From: Anti-inflammatory effect of essential oil extracted from Pinus densiflora (Sieb. et Zucc.) wood on RBL-2H3 cellsEffects of the wood essential oil and five oil fractions on a IL-4 and b IL-13 mRNA expression levels. VE: vehicle, DMSO; NC: negative control, 1 μg/mL LPS-treated group; PC: positive control, 100 nM dexamethasone treated group, an oil fraction (A–F) (0.08 μg/mL). Values are presented as mean ± standard deviation. *p < 0.05 and **p < 0.01 compared with VE; and #p < 0.05, ##p < 0.01 compared with NCBack to article page