gastric cancer , atrophic gastritis , and intestinal metaplasia of the stomach were associated with pepsinogen a phenotypes , characterized by an intense fraction 5 , and with a low serum pepsinogen a level ( less than 25 micrograms/l ) , a low serum pepsinogen a/pepsinogen c ratio ( less than 1.5 ) , and a high serum gastrin level ( greater than 79 ng/l ) .
C0030913
pepsinogen
C0030915
pepsinogen a