in an immunohistochemical study of the presence of the beta subunit of human chorionic gonadotrophin ( hcg ) in ovarian neoplasms it was found that hcg was detectable in 42 % of ovarian epithelial tumors , an incidence of hcg synthesis which very closely approximates that found in radioimmunoassay studies .
C0106132
beta subunit
C0018062
hcg