In patients with chronic superficial gastritis, IHC staining demonstrated decreased TLR6 staining in H. pylori+ gastric mucosa compared with H. pylori− gastric mucosa, which confirms that the colonization of H. pylori suppressed the expression of TLR6 in the gastric mucosa of patients with gastritis (Fig. 6L, M). This evidence concerns the gene TLR6 and gastritis.