AdenosineReceptors, Purinergic P1Purinergic P1 Receptor AgonistsReceptor, Adenosine A2APurinergic P1 Receptor AntagonistsReceptor, Adenosine A3Receptor, Adenosine A2BReceptor, Adenosine A1Adenosine-5'-(N-ethylcarboxamide)XanthinesPhenethylaminesAdenosine A2 Receptor AntagonistsAdenosine A2 Receptor AgonistsAdenosine A1 Receptor AgonistsReceptors, Adenosine A2Adenosine DeaminaseBiphenyl CompoundsAdenosine A1 Receptor AntagonistsReceptors, AngiotensinReceptors, Prostaglandin E, EP1 SubtypeTriazolesReceptors, PurinergicReceptors, Prostaglandin E, EP3 SubtypeAdenosine KinaseAdenosine A3 Receptor AntagonistsAdenosine A3 Receptor AgonistsReceptors, Prostaglandin E, EP2 SubtypePhenylisopropyladenosineTheophylline2-ChloroadenosineReceptors, Prostaglandin E, EP4 SubtypeAdenosine MonophosphateCyclic AMPRadioligand AssayTriazines5'-NucleotidaseTheobrominePurinergic AntagonistsInosinePurinesTubercidinDose-Response Relationship, DrugAminophyllineRats, Sprague-DawleyBinding, CompetitiveReceptors, SomatostatinDipyridamoleAdenylate CyclaseAdenine NucleotidesCells, CulturedNorbornanesAdenosine TriphosphatasesGuinea PigsCaffeineThioinosineVasodilator AgentsCricetinaeRats, WistarAdenineCHO CellsKineticsSignal TransductionReceptors, Purinergic P2Nucleoside Transport ProteinsRNA, MessengerMice, KnockoutColforsinCalciumMyocardiumNucleoside DeaminasesReceptors, MuscarinicCoformycinDeoxyadenosinesMolecular Sequence DataMice, Inbred C57BLNucleosidesCell LineGTP-Binding ProteinsStructure-Activity RelationshipCell MembraneLigandsBrainDogsPertussis ToxinPentostatinTime FactorsVasodilationReceptors, SerotoninTritiumAdenosine PhosphosulfateReceptors, Dopamine D2Phosphodiesterase InhibitorsHypoxanthineRabbitsReceptor, Muscarinic M3Receptors, Prostaglandin EThionucleosides4-(3-Butoxy-4-methoxybenzyl)-2-imidazolidinonePurinergic P2 Receptor AntagonistsHyperemia