The number of IL-10 positive structures was noted with abundant (++++) cells in the epithelium and moderate (++) cells in the connective tissue of the control samples (Figure 2 and Figure 3f), and few (+) cells in the epithelium and moderate-to-numerous (++/+++) cells in the connective tissue of the nasal polyp samples (Figure 2 and Figure 4f). This evidence concerns the gene IL10 and Nasal polyposis.