Fig. 8
Effects of PCA and Que on mRNA abundance of TLR4 signaling pathway after infection with ETEC in IPEC-1 cells. Cells were pre-treated with 40 μmol/L PCA or 10 μmol/L Que for 24 h and then infected with or without 1 × 108 ETEC K88/mL for 2 h. Values are means ± SE, n = 6. a–eDifferent letters represent a significant difference, P < 0.05. IPEC-1, intestinal porcine epithelial cell 1. CD14, cluster differentiation factor-14; IRAK1, IL-1 receptor-associated kinase 1; LBP, LPS binding protein; MD2, myeloid differentiation factor-2; TLR4, toll-like receptor; NF-κB, nuclear factor-κB