saturation binding assays by use of [ 125i ] -iodopindolol were carried out at different perinatal ages to determine total beta-adrenoceptor concentrations and beta 2-subtype ( in the presence of 5 x 10 ( -7 ) m atenolol ) adrenoceptor concentrations .
C0001643
beta-adrenoceptor
C0034783
adrenoceptor