the affinities of pancuronium for muscarinic receptors mediating negative inotropic responses in the kitten left atrium or negative chronotropic responses in guinea-pig or rabbit right atria were not significantly different from that in the guinea-pig left atrium ( p greater than 0.05 ) but the affinity of pancuronium for muscarinic receptors in ileal longitudinal muscle was significantly different ( p less than 0.05 ) from all values obtained in the cardiac preparations suggesting differences in the binding of the antagonist in smooth and cardiac muscle .
C0018787
cardiac
C0027061
cardiac muscle