Table 2.

The expression of IL-8, IL-8 receptors (IL-8RA/IL-8RB) immunoreactivities in controls, adenomas and cancers

	Control	Adenoma	Cancer	P value
IL-8 in stroma	2.13 ± 0.25	2.38 ± 0.17	2.27 ± 0.18	>0.05
IL-8 in epithelium	1.46 ± 0.28	1.66 ± 0.21	2.32 ± 0.28	<0.05
IL-8RA in stroma	1.62 ± 0.15	1.64 ± 0.13	2.32 ± 0.26	>0.05
IL-8RA in epithelium	1.27 ± 0.18	1.11 ± 0.13	1.02 ± 0.20	>0.05
IL-8RB in stroma	2.44 ± 0.16	2.66 ± 0.11	2.42 ± 0.16	>0.05
IL-8RB in epithelium	0.75 ± 0.25	1.20 ± 0.21	0.92 ± 0.21	>0.05

Statistical significance was evaluated by the non-parametric Kruskal–Wallis test