a sandwich-type enzyme immunoassay system specific for human chorionic gonadotrophin ( hcg ) was prepared with the antibody fab'-beta-d-galactosidase complex and the antibody f ( ab ' ) 2-immobilized silicone rubber solid phase by using a purified antibody to beta subunit of hcg ( hcg beta ) .
C0018062
human chorionic
C0106132
beta subunit