title: Cimetidine, gastric pH, and nitrosation.
mesh_terms: D001419:Bacteria / Q000378:metabolism; D002927:Cimetidine / Q000494:pharmacology*; D006146:Guanidines / Q000494:pharmacology*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D009566:Nitrates / Q000378:metabolism*; D013270:Stomach / Q000382:microbiology*
chemical_list: D006146:Guanidines; D009566:Nitrates; D002927:Cimetidine