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Induction of hIL-8 expression in Caco-2 cells by Shi-gella F2a-12 LPS in different culture groups. Comparison of hIL-8 expression in Caco-2 cells in the absence or presence of LPS for 8-h and 24-h between three culture groups by semi-quantitative RT-PCR with Peyer’s patch lymphocytes as nega-tive control. The values indicate mean ± SE; aP < 0.05, bP < 0.01 (compared to its own control) ; cP < 0.05 (compared to separated co-culture LPS pre-treatment for 8-h).
