title: Age-associated decrease in heart rate response to isoproterenol in dogs.
mesh_terms: D000375:Aging; D000758:Anesthesia; D000818:Animals; D001285:Atropine / Q000494:pharmacology; D004285:Dogs; D004305:Dose-Response Relationship, Drug; D005260:Female; D006339:Heart Rate / Q000187:drug effects*; D007545:Isoproterenol / Q000494:pharmacology*
chemical_list: D001285:Atropine; D007545:Isoproterenol