title: Histamine-infusion test.
mesh_terms: D001285:Atropine / Q000494:pharmacology; D004381:Duodenal Ulcer; D005745:Gastric Acidity Determination; D006584:Hexamethonium Compounds / Q000494:pharmacology*; D006632:Histamine / Q000494:pharmacology*; D006801:Humans
chemical_list: D006584:Hexamethonium Compounds; D001285:Atropine; D006632:Histamine