Receptors, Nicotinicalpha7 Nicotinic Acetylcholine ReceptorAcetylcholineNicotinic AntagonistsNicotinic AgonistsTorpedoBungarotoxinsNicotineReceptors, CholinergicAconitineConotoxinsAzocinesMecamylamineDihydro-beta-ErythroidineBicyclo Compounds, HeterocyclicQuinolizinesCholinergic AgentsElectric OrganCobra Neurotoxin ProteinsTubocurarineVesicular Acetylcholine Transport ProteinsXenopus laevisAzetidinesDimethylphenylpiperazinium IodidePyridinesProtein SubunitsCarbacholOocytesNeuronsDose-Response Relationship, DrugReceptors, MuscarinicAmphibian VenomsAnabasineNeuromuscular JunctionCholineGanglionic StimulantsPatch-Clamp TechniquesBenzylidene CompoundsMusclesCholinergic AgonistsGalantamineMyasthenia GravisCholinesterase InhibitorsHexamethoniumAlkaloidsPhysostigmineIon ChannelsCholinergic AntagonistsAtropineMembrane PotentialsAzirinesElectrophysiologyXenopusRats, Sprague-DawleyAmino Acid SequenceDrug Partial AgonismBinding SitesMolecular Sequence DataMollusk VenomsGanglia, ParasympatheticSynaptic TransmissionMuscarinic AntagonistsRadioligand AssayAcetylcholinesteraseNitro CompoundsPhotoaffinity LabelsMotor EndplateTobacco Use DisorderConus SnailBinding, CompetitiveLigandsIon Channel GatingQuinoxalinesReceptors, Serotonin, 5-HT3CalciumParasympathomimeticsCholine O-AcetyltransferaseBicyclo CompoundsBenzazepinesProadifenMuscarinic AgonistsBrainNootropic AgentsAllosteric RegulationKineticsAzabicyclo CompoundsAgrinMorantelDecamethonium CompoundsCells, CulturedNeurotoxinsIsoxazolesPhencyclidineModels, MolecularElectric StimulationProtein BindingLobelineSynaptosomesStructure-Activity RelationshipQuaternary Ammonium Compounds