“…Morphologically, they have been localized, by immunohistochemistry using a specific CCK-B antiserum, on parietal cells, chief cells, and some endocrine cells in the gastric mucosa of guineapig (Tarasova et al, 1996). By in situ hybridization, these receptors have been identified on the parietal, chief, ECL cells, and some proliferative cells in the gastric mucosa of normal or hypergastrinemic rats (Kawasaki et al, 1995;Waki et al, 1998). Recently, two other groups localized CCK-B receptors to parietal cells of the human stomach, by the use of autoradiography after gastrin-binding studies (Praissman et al, 1998;Reubi et al, 1997).…”