title: Variations in the relative potencies of bronchodilators in the presence and absence of carbachol-induced tone.
mesh_terms: D000628:Aminophylline / Q000037:antagonists & inhibitors; D000818:Animals; D001993:Bronchodilator Agents / Q000037:antagonists & inhibitors*; D002217:Carbachol / Q000494:pharmacology*; D004347:Drug Interactions; D066298:In Vitro Techniques; D007545:Isoproterenol / Q000037:antagonists & inhibitors; D008297:Male; D009129:Muscle Tonus / Q000187:drug effects*; D009130:Muscle, Smooth / Q000187:drug effects; D010226:Parabens / Q000037:antagonists & inhibitors; D014132:Trachea / Q000187:drug effects*
chemical_list: D001993:Bronchodilator Agents; D010226:Parabens; D000628:Aminophylline; D002217:Carbachol; D007545:Isoproterenol