title: Relaxation of the guinea-pig tracheal chain preparation by N6,2'-O-dibutyryl 3',5'-cyclic adenosine monophosphate.
mesh_terms: D000227:Adenine Nucleotides / Q000494:pharmacology*; D000818:Animals; D001665:Binding Sites; D002087:Butyrates / Q000494:pharmacology; D002417:Cattle; D000242:Cyclic AMP / Q000378:metabolism / Q000494:pharmacology; D006168:Guinea Pigs; D066298:In Vitro Techniques; D007545:Isoproterenol / Q000494:pharmacology; D008297:Male; D010744:Phosphoric Monoester Hydrolases; D011433:Propranolol / Q000494:pharmacology; D013806:Theophylline / Q000494:pharmacology; D014132:Trachea / Q000187:drug effects*
chemical_list: D000227:Adenine Nucleotides; D002087:Butyrates; D011433:Propranolol; D013806:Theophylline; D000242:Cyclic AMP; D010744:Phosphoric Monoester Hydrolases; D007545:Isoproterenol