cholinergic receptors were studied in membranes prepared from rabbit cornea , iris-ciliary body , and retina , using 3h-quinuclidinyl benzilate ( 3h-qnb ) to identify muscarinic receptors and 125i-alpha-bungarotoxin ( 125i-bgt ) to identify nicotinic receptors .
C0034792
cholinergic receptors
C0034826
muscarinic receptors