title: Effects of theophylline on the contractile activity of taenia coli.
mesh_terms: D000818:Animals; D002118:Calcium / Q000378:metabolism; D000242:Cyclic AMP / Q000378:metabolism; D003864:Depression, Chemical; D006168:Guinea Pigs; D066298:In Vitro Techniques; D007420:Intestine, Large / Q000502:physiology*; D008297:Male; D009119:Muscle Contraction / Q000187:drug effects*; D009130:Muscle, Smooth / Q000187:drug effects* / Q000502:physiology; D010744:Phosphoric Monoester Hydrolases / Q000037:antagonists & inhibitors; D011188:Potassium / Q000037:antagonists & inhibitors; D013806:Theophylline / Q000008:administration & dosage / Q000494:pharmacology*
chemical_list: D013806:Theophylline; D000242:Cyclic AMP; D010744:Phosphoric Monoester Hydrolases; D011188:Potassium; D002118:Calcium