utilizing multiple indicator-dilution techniques , we studied [ 3h ] -pirenzepine ( [ 3h ] -pnz ; a selective m1 receptor antagonist ) binding during a single transpulmonary pass in anesthetized , artificially ventilated rabbits , before and after administration of 4.3 mumol/kg of the nonselective muscarinic receptor antagonist atropine .
C0531859
m1 receptor
C0034826
muscarinic receptor