the high affinity beta-adrenoceptor blocker ( - ) bupranolol antagonized the adenylyl cyclase stimulation by ( - ) isoprenaline to similar extent in membranes from ( - ) isoprenaline and untreated atria , suggesting that the apparent affinity of beta-adrenoceptors for ligands is unchanged by desensitization .
C0034783
adrenoceptor
C0001643
beta-adrenoceptors