these extended chain conjugates , in which the cardiac glycoside potentially lay some 30 a removed from the surface of the macromolecule , also exhibited negligible digitalis-like effects when tested upon isolated cardiac muscle , red cell ( 86 ) rb ( + ) uptake , and enzymatic activity of cardiac microsomal ( na ( + ) + k ( + ) ) -atpase .
C0027061
cardiac muscle
C0018787
cardiac