title: [Changes of cyclic AMP levels in the trachea and their significance, with special reference to the effects of bronchodilators, steroids, histamine and antihistamine].
mesh_terms: D000818:Animals; D000242:Cyclic AMP / Q000378:metabolism*; D004155:Diphenhydramine / Q000494:pharmacology*; D006168:Guinea Pigs; D006632:Histamine / Q000494:pharmacology; D007545:Isoproterenol / Q000494:pharmacology*; D011239:Prednisolone / Q000494:pharmacology*; D051381:Rats; D014132:Trachea / Q000187:drug effects / Q000378:metabolism*
chemical_list: D006632:Histamine; D004155:Diphenhydramine; D011239:Prednisolone; D000242:Cyclic AMP; D007545:Isoproterenol