Receptor, Muscarinic M3Receptor, Muscarinic M1Receptors, MuscarinicMuscarinic AntagonistsReceptor, Muscarinic M2Muscarinic AgonistsReceptor, Muscarinic M4N-MethylscopolamineReceptor, Muscarinic M5CarbacholDiaminesParasympatholyticsPirenzepineGallamine TriethiodideCholinergic AgonistsAtropineAcetylcholinePiperidinesDiphenylacetic AcidsCholinergic AgentsMuscarineThiadiazolesDose-Response Relationship, DrugRadioligand AssayScopolamine HydrobromideParasympathomimeticsScopolamine DerivativesDioxolanesMuscle, SmoothCHO CellsGuinea PigsOxotremorineBethanecholRats, Sprague-DawleyDicyclomineDopamine AgonistsBiperidenCricetinaePilocarpineMethacholine ChlorideMuscle ContractionBinding, CompetitiveTracheaRats, WistarGTP-Binding ProteinsIleumDopamine AntagonistsCalciumHormone AntagonistsMaltaNarcotic AntagonistsExcitatory Amino Acid AntagonistsPertussis ToxinGuanosine 5'-O-(3-Thiotriphosphate)CricetulusDrug AgonismGTP-Binding Protein alpha Subunits, Gi-GoNicotinic AntagonistsGTP-Binding Protein alpha Subunits, Gq-G11PhosphatidylinositolsTropicamideNeurokinin-1 Receptor AntagonistsCells, CulturedPyridinesSignal TransductionType C PhospholipasesGABA AgonistsInositol PhosphatesElectric StimulationVirulence Factors, BordetellaAllosteric RegulationObidoxime ChlorideHistamine H2 AntagonistsQuinuclidinesCyclic AMPNicotinic AgonistsLigandsIsoproterenolDrug InteractionsBenztropineGABA AntagonistsPurinergic P1 Receptor AgonistsIsatinKineticsPatch-Clamp TechniquesNeuronsCholinergic FibersTacrinePurinergic P1 Receptor AntagonistsInterleukin 1 Receptor Antagonist ProteinHistamine H1 AntagonistsIsoindolesAdrenergic beta-AgonistsHeart AtriaAdrenergic AgonistsPropylbenzilylcholine MustardCell LineHistamine AntagonistsBenzilatesReceptors, G-Protein-Coupled