title: Elevated serum pepsinogen I: a genetic marker for duodenal-ulcer disease.
mesh_terms: D004381:Duodenal Ulcer / Q000201:enzymology / Q000235:genetics* / Q000503:physiopathology; D005750:Gastric Juice / Q000378:metabolism; D005799:Genes, Dominant; D006801:Humans; D010434:Pepsin A / Q000378:metabolism; D010435:Pepsinogens / Q000097:blood*
chemical_list: D010435:Pepsinogens; D010434:Pepsin A