Localization of S100P protein in the human gut. All segments including duodenum (A), ileum (B), cecum (C) and colon (D) showed positive reactions in the enterocytes. In the large intestine, the most prominent reactions were observed in the surface epithelial cuff region (S). The reactions became weaker toward the crypts (Cr). Both the lymphoid follicles (E) and smooth muscle (F) of the intestinal wall remained negative.
Parkkila et al. BMC Clinical Pathology 2008 8:2 doi:10.1186/1472-6890-8-2