Guinea PigsCarbacholReceptors, MuscarinicMuscarinic AgonistsMuscarinic AntagonistsReceptor, Muscarinic M3Receptor, Muscarinic M1Cholinergic AgonistsReceptor, Muscarinic M4AtropineN-MethylscopolamineParasympathomimeticsParasympatholyticsMuscle, SmoothAcetylcholineMuscarineDiaminesGuineaIleumMuscle ContractionGallamine TriethiodidePapua New GuineaTracheaCholinergic AgentsScopolamine DerivativesCalciumScopolamine HydrobromideDose-Response Relationship, DrugBethanecholNew GuineaPropylbenzilylcholine MustardPilocarpineHistamineReceptors, CholinergicParasympathetic Nervous SystemPiperidinesArecolineSwineUrinary BladderPhosphatidylinositolsElectric StimulationQuinuclidinesMembrane PotentialsPhysostigmineInositol PhosphatesMethacholine CompoundsParotid GlandBenzilatesIsoproterenolReceptor, Muscarinic M2GTP-Binding ProteinsRadioligand AssayMyocardiumCholinergic AntagonistsHeartDicyclomineRabbitsHexamethonium CompoundsKineticsBronchoconstrictionBethanechol CompoundsQuinuclidinyl BenzilateAction PotentialsPotassiumTime FactorsMuscle RelaxationCholinesterase InhibitorsCholinergic FibersType C PhospholipasesHeart AtriaPertussis ToxinElectrophysiologyPirenzepineAtropine DerivativesGuanosine 5'-O-(3-Thiotriphosphate)Patch-Clamp TechniquesRats, Sprague-DawleyMyenteric PlexusCricetinaeHexamethoniumCyclic AMPPotassium ChannelsVirulence Factors, BordetellaCells, CulturedAscorbic Acid DeficiencyThiadiazolesCHO CellsSpecies SpecificityNeuronsMethacholine ChlorideLungVagus NerveBinding, CompetitiveRats, WistarSwine DiseasesEquatorial GuineaColforsinLacrimal ApparatusProtein Kinase CDisease Models, Animal