in an attempt to examine the spatial relationships of the human chorionic gonadotropin ( hcg ) subunits in the assembly of the hcg-receptor complex , the recombined 125i-labeled hcg , with label in either the alpha subunit or the beta subunit , was cross-linked to the luteinizing hormone ( lh ) /hcg receptor .
C0018062
hcg
C0017963
alpha subunit