AdenosineAdenosine-5'-(N-ethylcarboxamide)Purinergic P1 Receptor AgonistsReceptors, Purinergic P1PhenylisopropyladenosineReceptor, Adenosine A2AReceptor, Adenosine A1Receptor, Adenosine A3Receptors, PurinergicXanthinesPhenethylaminesPurinergic P1 Receptor AntagonistsAdenosine A1 Receptor AntagonistsReceptor, Adenosine A2BAdenosine A2 Receptor AntagonistsAdenosine A1 Receptor Agonists2-ChloroadenosineAdenosine DeaminaseNorbornanesAdenosine KinaseReceptors, Adenosine A2Adenosine A2 Receptor AgonistsTheophyllineCyclic AMPAdenosine MonophosphateDose-Response Relationship, DrugVasodilator AgentsAdenosine A3 Receptor AgonistsAdenosine A3 Receptor AntagonistsRats, Sprague-DawleyInosine5'-NucleotidaseDopamine AgonistsTubercidinAdenosine TriphosphatasesAdenine NucleotidesNucleoside DeaminasesCoformycinDipyridamoleTheobrominePentostatinKineticsGABA AgonistsAdenosine PhosphosulfateTriazinesPurinesPurinergic P2 Receptor AgonistsCells, CulturedThioinosineAdenine