Radioligand AssayBinding, CompetitiveIodocyanopindololReceptors, Adrenergic, betaQuinuclidinyl BenzilateReceptors, Adrenergic, alpha-1PindololN-MethylscopolamineTetralonesDihydroalprenololTritiumCHO CellsIodine RadioisotopesAdrenergic alpha-1 Receptor AntagonistsReceptors, SerotoninPropanolaminesLigandsCricetinaeSerotonin AntagonistsAdrenergic alpha-AntagonistsXanthinesReceptors, MuscarinicReceptors, Dopamine D2Receptors, Purinergic P1AutoradiographyIsradipineBinding SitesBicyclo Compounds, HeterocyclicBrainReceptor, Adenosine A3Dose-Response Relationship, DrugSpiperoneKineticsPositron-Emission TomographyFluorine RadioisotopesReceptors, Serotonin, 5-HT3Receptors, AngiotensinCell MembraneReceptor, Adenosine A1MembranesRadiopharmaceuticalsReceptors, Adrenergic, alphaRats, Sprague-DawleyMuscarinic AntagonistsPrazosinPyridinesReceptors, Histamine H3PhenethylaminesCyclic AMPReceptors, CholecystokininReceptors, sigmaSerotonin Receptor AgonistsAllosteric RegulationGuinea PigsCricetulusDioxanesCarbon RadioisotopesReceptors, Dopamine D3Dopamine AgonistsDihydropyridinesCerebral CortexReceptor, Muscarinic M2PiperidinesReceptor, Serotonin, 5-HT2APurinergic P1 Receptor AntagonistsReceptors, Adrenergic, beta-2Receptors, AdrenergicDopamine AntagonistsProtein BindingPurinergic P1 Receptor AgonistsAdenosineAdrenergic beta-AntagonistsBenzodiazepinonesCell LineReceptors, DopamineAdenosine-5'-(N-ethylcarboxamide)PhenylisopropyladenosineBicyclo CompoundsFlumazenilReceptor, Muscarinic M3DiprenorphineReceptors, ThromboxaneGuanosine 5'-O-(3-Thiotriphosphate)Adrenergic beta-AgonistsAdenylate CyclaseImidazolesPirenzepinePiperazinesTissue DistributionReceptors, PurinergicNortropanesDopamine Plasma Membrane Transport ProteinsIsoproterenolAdrenergic alpha-AgonistsReceptors, GABA-AKetanserinClonidineTripelennamineReceptor, Muscarinic M1Structure-Activity Relationship