these results show that : ( 1 ) the significant correlation observed between kd values on guinea pig cardiac ( na+ + k+ ) -atpase and positive inotropic potency in guinea pig left atria is further evidence that the pharmacological receptor for inotropy is part of the enzyme , ( 2 ) inhibition of the binding of [ 3h ] ouabain or [ 3h ] digitoxin can be used to determine the relative potencies of unlabelled digitalis derivatives .
C0018787
cardiac
C0225860
left atria