one of the monoclonal antibodies , beta-4d6 , was shown to have extremely high affinity ( ka = 8 x 10 ( 10 ) m-1 ) ) and high specificity ( less than or equal to 0.6 % lh cross-reactivity ) to beta-subunit of hcg and whole hcg .
C0106132
beta-subunit
C0018062
hcg