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TNF-α treatment reduced olfactory receptor family 51, subfamily E, member 2 (OR51E2) RNA expression in the human colonic cell line. RNA was extracted from control and TNF-α-treated (100 ng/mL) HT-29 colonic cells and analyzed for the expression of OR51E2 by real-time RT-PCR and normalized with GAPDH (n = 3, *P < 0.05).
