CXCL8 and Nasal polyposis: A similar distribution was also seen with IL-8, where numerous-to-abundant (+++/++++) positive structures were in the epithelium and few (+) positive connective tissue structures were seen in the control samples (Figure 2 and Figure 3e), and the nasal polyp samples showed few (+) positive structures in the epithelium and moderate (++) numbers of positive structures in the subepithelial connective tissue (Figure 2 and Figure 4e).