FIG 4.
Relative gene expression of Toll-like receptors in IPEC-J2 cells. A coincubation assay was performed for 4 h with equal numbers of CP9 and ETEC in IPEC-J2 cells. The relative expression of TLR2 (A), TLR4 (B), and TLR9 (C) mRNAs was calculated by real-time PCR. The expression levels of all target genes were calculated relative to the housekeeping gene GAPDH using the 2−ΔΔCT method. The values for the control cells were set to 1. The data are presented as means ± the SEM. Means marked with different letters (a, b, and c) differ significantly (P < 0.05).
