title: Divergent effects of theophylline on adenylate cyclase preparations from guinea-pig heart and lung.
mesh_terms: D000255:Adenosine Triphosphate / Q000378:metabolism; D000067956:Adenylyl Cyclase Inhibitors; D000818:Animals; D001345:Autoradiography; D000242:Cyclic AMP / Q000032:analysis / Q000378:metabolism; D004789:Enzyme Activation; D006168:Guinea Pigs; D008168:Lung / Q000201:enzymology*; D009206:Myocardium / Q000201:enzymology*; D010744:Phosphoric Monoester Hydrolases / Q000032:analysis / Q000378:metabolism; D010759:Phosphorus Isotopes; D013806:Theophylline / Q000494:pharmacology*
chemical_list: D000067956:Adenylyl Cyclase Inhibitors; D010759:Phosphorus Isotopes; D000255:Adenosine Triphosphate; D013806:Theophylline; D000242:Cyclic AMP; D010744:Phosphoric Monoester Hydrolases