accordingly , we hypothesize : ( 1 ) that this hcg-like material in normal tissues has the protein structure of hcg but does not possess the carbohydrate moieties of placental hcg and probably has little or no bioactivity in vivo and ( 2 ) that the trophoblastic cell is not unique in its ability to synthesize hcg but has developed the ability to glycosylate hcg , transforming a ubiquitous cellular protein into a hormone , hcg might better be called human cellular gonadotropin .
C0018062
hcg
C0018061
gonadotropin