Quinuclidinyl BenzilateReceptors, MuscarinicQuinuclidinesBenzilatesReceptors, CholinergicMuscarinic AntagonistsPropylbenzilylcholine MustardCarbacholOxotremorineParasympathomimeticsN-MethylscopolamineParasympatholyticsMuscarinic AgonistsPirenzepineAtropineRadioligand AssayBinding, CompetitiveTritiumAcetylcholineRats, Inbred StrainsGuinea PigsBrainMyocardiumKinetics