Figure 1: Mucosal gene expression and LP T cell producing IL-17A, IL-21, and IL-22 at baseline in inflamed and noninflamed mucosa. Gene expression was determined by rtPCR (a) and frequencies of IL-17A-, IL-21-, and IL-22-producing cells among LP CD3+ T cells were determined by flow cytometry (b). Gene expression data is displayed as the normalized ratios between the relative expression of the gene of interest and the housekeeping gene HPRT-1. Wilcoxon signed-rank test for comparison was applied on paired samples (rtPCR: IL-17A ; IL-21 ; IL-22 ; flow cytometry: for each cytokine).