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Effect of bee pollen methanolic extract on (A) TNF-α and (B) IL-1β, 72 h following carrageenan injection. Values are the mean ± SEM shown. **P < 0.01 and ***P < 0.001 indicate significant differences from control group (normal saline + carrageenan). TNF-α, tumor necrosis factor alpha; IL-1β, interleukin 1 beta.
