title: Age-dependent alterations in the formation of cyclic nucleotides caused by various agents in guinea-pig tracheal smooth muscle.
mesh_terms: D000375:Aging; D000818:Animals; D000831:Animals, Newborn / Q000378:metabolism*; D002217:Carbachol / Q000494:pharmacology; D006168:Guinea Pigs; D066298:In Vitro Techniques; D007545:Isoproterenol / Q000494:pharmacology; D008297:Male; D009130:Muscle, Smooth / Q000187:drug effects* / Q000378:metabolism; D009712:Nucleotides, Cyclic / Q000096:biosynthesis*; D014132:Trachea / Q000187:drug effects / Q000378:metabolism
chemical_list: D009712:Nucleotides, Cyclic; D002217:Carbachol; D007545:Isoproterenol