Fig. 2From: Ethanol extract of Paridis rhizoma attenuates carrageenan-induced paw swelling in rats by inhibiting the production of inflammatory factorsEffect of PRE on the expression of inflammatory cytokines in rats with foot swelling. a-d Serum levels of IL-6, TNF-α, COX2 and PGE2 in the indicated group. Data are presented as the mean ± SEM (n = 3). *p < 0.05, **p < 0.01, ***p < 0.001Back to article page