title: Phosphodiesterase inhibitors as tools in cyclic nucleotide research: a precautionary comment.
mesh_terms: D015056:1-Methyl-3-isobutylxanthine / Q000494:pharmacology; D015105:3',5'-Cyclic-AMP Phosphodiesterases / Q000037:antagonists & inhibitors; D015106:3',5'-Cyclic-GMP Phosphodiesterases / Q000037:antagonists & inhibitors; D000818:Animals; D002110:Caffeine / Q000494:pharmacology; D000242:Cyclic AMP / Q000378:metabolism*; D006152:Cyclic GMP / Q000378:metabolism*; D007527:Isoenzymes / Q000378:metabolism; D010726:Phosphodiesterase Inhibitors / Q000378:metabolism*; D013806:Theophylline / Q000494:pharmacology; D014970:Xanthines / Q000378:metabolism
chemical_list: D007527:Isoenzymes; D010726:Phosphodiesterase Inhibitors; D014970:Xanthines; D002110:Caffeine; D013806:Theophylline; D000242:Cyclic AMP; D015105:3',5'-Cyclic-AMP Phosphodiesterases; D015106:3',5'-Cyclic-GMP Phosphodiesterases; D006152:Cyclic GMP; D015056:1-Methyl-3-isobutylxanthine