Quinuclidinyl BenzilateReceptors, MuscarinicQuinuclidinesBenzilatesReceptors, CholinergicMuscarinic AntagonistsPropylbenzilylcholine MustardCarbacholOxotremorineParasympathomimeticsN-MethylscopolamineParasympatholyticsMuscarinic AgonistsPirenzepineAtropineRadioligand AssayBinding, CompetitiveTritiumAcetylcholineBrainRats, Inbred StrainsGuinea PigsMyocardiumKineticsBrain Chemistry