the hcg beta- ( 38-57 ) and hlh beta- ( 38-57 ) peptides inhibited binding of 125i-labeled hcg half-maximally at 1.51 x 10 ( -4 ) and 2.03 x 10 ( -5 ) m , respectively , while other peptide hormones and fragments from elsewhere in the beta subunit were inactive .
C1141639
hcg
C0597192
peptide hormones