Interaction between enteric epithelial cells and Peyer’s patch lymphocytes in response to Shigella lipopolysaccharide: Effect on nitric oxide and IL-6 release

Figure 1 Enhancement of the constitutive NO release in the Caco-2 cocultured with lymphocytes of Peyer’s patch. The level of NO in different culture conditions (Caco-2 alone: gray bar; PPL alone: black bar; coculture: white bar) was measured by Griess reagent system and the bar values were derived based on a standard curve. The values represent the means ± SE for 6-12 different samples; ^bP < 0.001 vs PPL; ^dP < 0.001 vs Caco-2.