Fig. 1.
Interleukin (IL)-8 secretion by Salmonella serovar Enteritidis exposed crypt-like (a) and villus-like (b) Caco-2 cells. Incubation of the cells was performed with 200 bacteria/cell and the IL-8 secretion was measured at various time-points. IL-8 secretion is expressed as pg IL-8/106 cells. Salmonella-induced IL-8 secretion was determined using two cell passages and triplicate cultures per passage. Significant differences (*P < 0·05) between the IL-8 levels of Salmonella exposed cells and control Caco-2 cells are indicated.