Fig. 1.

Olfactory receptor-78 (Olfr-78)/olfactory receptor family 51, subfamily E, member 2 (OR51E2) expression in mouse and human intestinal samples and colon cancer cell lines. A: total RNA isolated from mucosal scrapings of different regions of mouse intestine was analyzed for Olfr-78 expression by real-time RT-PCR and normalized with GAPDH mRNA (n = 3; *P < 0.05, **P < 0.01, ***P < 0.001, ****P < 0.0001, ^$$P < 0.01, and ^$$$$P = 0.0001). B: RNA from different regions of human intestine was extracted and analyzed for OR51E2 expression by real-time RT-PCR and normalized with GAPDH RNA. C: RNA from Caco-2, T-84, and HT-29 colonic epithelial cells was isolated and subjected to real-time RT-PCR using OR51E2-specific primers and normalized with GAPDH mRNA.