Receptors, MuscarinicMuscarinic AntagonistsMuscarinic AgonistsReceptor, Muscarinic M3Receptor, Muscarinic M1Pharmacology, ClinicalPharmacologyReceptor, Muscarinic M4CarbacholN-MethylscopolamineParasympathomimeticsAtropineParasympatholyticsMuscarineCholinergic AgonistsTherapeuticsAcetylcholineDiaminesGallamine TriethiodideScopolamine DerivativesScopolamine HydrobromideCholinergic AgentsBethanecholDose-Response Relationship, DrugRadioligand AssayPiperidinesGuinea PigsPharmacy and Therapeutics CommitteePropylbenzilylcholine MustardPilocarpineBenzilatesMuscle, SmoothArecolineDrug DesignCHO CellsDrug Delivery SystemsDrug DiscoveryMethacholine CompoundsQuinuclidinesReceptors, CholinergicSignal TransductionThiadiazolesDicyclomineParasympathetic Nervous SystemCricetinaeNeoplasmsGTP-Binding ProteinsCalciumRats, Sprague-DawleyLigandsBethanechol CompoundsBinding, CompetitiveIleumDrug Evaluation, PreclinicalMuscle ContractionPhysostigmineCholinesterase InhibitorsDexetimideAntineoplastic AgentsNeuronsPhosphatidylinositolsReceptors, G-Protein-CoupledMolecular Targeted TherapyUrinary BladderReceptors, NicotinicPharmaceutical PreparationsCell LineKineticsElectric StimulationNicotinic AntagonistsMembrane PotentialsCholinergic AntagonistsCricetulusAllosteric RegulationHexamethonium CompoundsAtropine DerivativesGuanosine 5'-O-(3-Thiotriphosphate)Inositol PhosphatesMethacholine ChlorideCells, CulturedPatch-Clamp TechniquesMolecular Sequence DataTracheaClinical Trials as TopicMecamylamineCell Line, TumorBrainDisease Models, AnimalTime FactorsAlcuroniumStructure-Activity RelationshipRats, WistarCholinergic FibersPertussis ToxinTropicamideSalivationDrug InteractionsProtein BindingAmino Acid SequenceTransfection