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IL-8 production in Caco-2 cells after treatment with TNF-α in the presence of antibodies to TNFR1 or TNFR2 in the apical chamber. α-TNFR1 antibody to TNF-α receptor 1 (15 μg/ml), α-TNFR2 antibody to TNF-α receptor 2 (15 μg/ml), IgG isotype control antibody (30 μg/ml). *p<0.05 vs. TNF-α alone
