the daily excretion of urinary human chorionic gonadotropin ( hcg ) and the serum concentration of the beta-subunit of hcg were elevated in both patients , but carcinoembryonic antigen , regan isoenzyme , alpha1-fetoprotein , serum pregnancy-associated globulin and human chorionic somatomammotropin were not detectable .
C0106132
beta-subunit
C0032961
pregnancy