title: Serum concentrations of human chorionic gonadotrophin and its alpha and beta subunits. 1. During normal singleton and twin pregnancies.
abstract: Homologous radioimmunoassays have been developed for native hCG and its alpha and beta subunits. Their specificities were assessed by analysis of the inhibition ca and beta subunits. 1. During normal singleton and twin pregnancies.
mesh_terms: D002850:Chromatography, Gel; D005260:Female; D006801:Humans; D011247:Pregnancy; D011272:Pregnancy, Multiple; D011863:Radioimmunoassay; D014427:Twins