a new radioimmunoassay system was established with a monoclonal antibody ( 1e5 ) that distinguishes the free beta-subunit of human chorionic gonadotropin in the presence of intact human chorionic gonadotropin , showing only 0.23 % cross-reactivity with the intact human chorionic gonadotropin molecule and virtually no cross-reactivity with other glycoprotein hormones or their beta-subunits .
C0106132
beta-subunit
C0018062
human chorionic gonadotropin