3',5'-Cyclic-AMP PhosphodiesterasesCyclic Nucleotide Phosphodiesterases, Type 4Cyclic Nucleotide Phosphodiesterases, Type 3Cyclic Nucleotide Phosphodiesterases, Type 1Phosphodiesterase InhibitorsRolipramPhosphoric Diester HydrolasesCyclic AMPCyclic GMP4-(3-Butoxy-4-methoxybenzyl)-2-imidazolidinone1-Methyl-3-isobutylxanthine3',5'-Cyclic-GMP PhosphodiesterasesCyclic AMP-Dependent Protein KinasesIsoenzymesMilrinoneAdenylate CyclaseMolecular Sequence DataPhosphodiesterase 4 InhibitorsPhosphodiesterase 3 InhibitorsAmino Acid SequencePhosphodiesterase 5 InhibitorsPyrrolidinonesDictyosteliumColforsinCyclic Nucleotide Phosphodiesterases, Type 5Phosphodiesterase ITheophyllineKinetics8-Bromo Cyclic Adenosine MonophosphateEnzyme Activation2',3'-Cyclic-Nucleotide PhosphodiesterasesPurinonesCyclic Nucleotide Phosphodiesterases, Type 6IsoquinolinesCells, CulturedCyclic Nucleotide Phosphodiesterases, Type 7Base SequenceCyclic Nucleotide Phosphodiesterases, Type 2Signal TransductionSulfonesAdipose TissueRats, Inbred StrainsPhosphorylationProtein KinasesInsulinPurinesBlood PlateletsCell LineTransducinRod Cell Outer SegmentBucladesineNucleotides, CyclicPapaverineVinca AlkaloidsPhotoreceptor CellsCalmodulinCattleIsoproterenolPiperazinesPyrophosphatasesXanthines