title: A modification of receptor theory. 1956.
authors.forename: R P
authors.initials: RP
authors.lastname: Stephenson
mesh_terms: D000109:Acetylcholine / Q000266:history / Q000494:pharmacology; D000818:Animals; D004305:Dose-Response Relationship, Drug; D005731:Ganglionic Stimulants / Q000266:history / Q000494:pharmacology; D006168:Guinea Pigs; D006632:Histamine / Q000266:history / Q000494:pharmacology; D049673:History, 20th Century; D007082:Ileum / Q000187:drug effects* / Q000378:metabolism; D009130:Muscle, Smooth / Q000187:drug effects*; D000644:Quaternary Ammonium Compounds / Q000266:history / Q000494:pharmacology; D011955:Receptors, Drug / Q000187:drug effects / Q000266:history* / Q000378:metabolism
chemical_list: D005731:Ganglionic Stimulants; D000644:Quaternary Ammonium Compounds; D011955:Receptors, Drug; D006632:Histamine; C027917:tetramethylammonium; D000109:Acetylcholine