the loss of [ 3h ] quinuclidinyl benzilate ( [ 3h ] qnb ) binding following high-energy radiation was used to compare the muscarinic receptor size on single smooth muscle cells isolated by collagenase digestion from the canine stomach and on plasma membranes derived from intact gastric smooth muscle without exposure to exogenous proteolysis .
C0162745
collagenase
C0597304
proteolysis