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Effects of PHL extract (125, 250, and 500 mg/kg) and SAZ (120 mg/kg) on the colonic production of Cox-2 (a), TNF-α (b), and IL-1β (c) determined by ELISA. Data are expressed as means ± SD (n = 8); ∗∗P < 0.01 and ∗P < 0.05 versus TNBS; ##P < 0.01 versus NII.
