2-ChloroadenosineAdenosineReceptors, PurinergicAdenosine-5'-(N-ethylcarboxamide)XanthinesReceptors, Purinergic P1PhenylisopropyladenosinePurinergic P1 Receptor AntagonistsTheophyllinePurinergic P1 Receptor AgonistsRNA, Messenger8-Bromo Cyclic Adenosine MonophosphatePhenethylaminesReceptor, Adenosine A2BTranscription, GeneticAdenosine DeaminaseDipyridamolePyran CopolymerCyclic AMPTubercidinPurinergic AntagonistsKineticsCells, CulturedCell LineProtein BiosynthesisAdenosine KinaseReceptor, Adenosine A2ABase SequenceMolecular Sequence DataRNA, ViralDose-Response Relationship, DrugGuinea PigsAdenineMuscarineAdenosine TriphosphatePurinesGene Expression RegulationArteritis Virus, EquineAdenylate CyclaseDactinomycinCycloheximideRats, Inbred Strains