AdenosineReceptor, Adenosine A2AReceptors, Purinergic P1Receptor, Adenosine A1Receptor, Adenosine A3Receptor, Adenosine A2BPurinergic P1 Receptor AgonistsPurinergic P1 Receptor AntagonistsAdenosine A2 Receptor AgonistsAdenosine A2 Receptor AntagonistsXanthinesReceptors, Adenosine A2Adenosine DeaminaseAdenosine-5'-(N-ethylcarboxamide)Adenosine A1 Receptor AntagonistsAdenosine A1 Receptor AgonistsReceptors, PurinergicAdenosine KinaseAdenosine A3 Receptor AntagonistsAdenosine A3 Receptor AgonistsPhenethylaminesPhenylisopropyladenosineTheophylline2-ChloroadenosineAdenosine Monophosphate5'-NucleotidaseTriazinesCyclic AMPTheobrominePurinergic AntagonistsInosineTriazolesPurinesTubercidinRadioligand AssayAminophyllineDipyridamoleAdenine NucleotidesNorbornanesAdenosine TriphosphatasesThioinosineDose-Response Relationship, DrugCaffeineAdenineAdenylate CyclaseVasodilator AgentsNucleoside Transport ProteinsNucleoside DeaminasesGuinea PigsCoformycinDeoxyadenosinesBinding, CompetitiveCells, CulturedKineticsRats, Sprague-DawleyNucleosidesColforsinMyocardiumPentostatinAdenosine PhosphosulfateSignal TransductionHypoxanthineRats, WistarCricetinaeThionucleosides4-(3-Butoxy-4-methoxybenzyl)-2-imidazolidinoneHyperemiaApyraseMice, KnockoutCHO CellsPhosphodiesterase InhibitorsCalciumVasodilationCoronary CirculationEquilibrative Nucleoside Transporter 1Ischemic Preconditioning, Myocardial1-Methyl-3-isobutylxanthineMice, Inbred C57BLReceptors, Purinergic P2DogsCell MembranePertussis ToxinStructure-Activity RelationshipGlyburideGTP-Binding ProteinsAminopyridinesHeartTime FactorsPerfusionTritiumAdenosine Deaminase InhibitorsAffinity LabelsIsoproterenolRabbitsEnzyme InhibitorsCyclohexanecarboxylic AcidsExtracellular SpaceHeart RateCyclic AMP-Dependent Protein KinasesNucleotidases