Fig. 2From: Bacillus licheniformis PF9 improves barrier function and alleviates inflammatory responses against enterotoxigenic Escherichia coli F4 infection in the porcine intestinal epithelial cellsEffect of B. licheniformis PF9 on ETEC F4-induced the alteration of cytokine IL-8 secretion in IPEC-J2 cells. The treatments of these groups are the same as the above in Fig. 1. The IL-8 concentration in the supernatant was measured by ELISA assay. The data were presented as mean ± SD, n = 4. Different letters represent a significant difference (P < 0.05)Back to article page