title: Hexamethonium potentiation of noradrenaline-induced contractions in the dilatator pupillae of the cat.
mesh_terms: D000818:Animals; D002415:Cats; D004357:Drug Synergism; D004558:Electric Stimulation; D006584:Hexamethonium Compounds / Q000494:pharmacology*; D066298:In Vitro Techniques; D007498:Iris / Q000187:drug effects*; D009119:Muscle Contraction / Q000187:drug effects*; D009411:Nerve Endings / Q000187:drug effects; D009474:Neurons / Q000187:drug effects; D009638:Norepinephrine / Q000494:pharmacology; D010275:Parasympathetic Nervous System / Q000187:drug effects*
chemical_list: D006584:Hexamethonium Compounds; D009638:Norepinephrine