title: Genetic heterogeneity in peptic ulcer.
mesh_terms: D005799:Genes, Dominant; D006579:Heterozygote; D006801:Humans; D010435:Pepsinogens / Q000235:genetics; D010437:Peptic Ulcer / Q000145:classification / Q000235:genetics*
chemical_list: D010435:Pepsinogens