title: New radioimmunoassay technique using second antibody to solid phase applied to assays of human chorionic somatomammotropin.
mesh_terms: D000033:Abortion, Threatened / Q000097:blood; D006063:Chorionic Gonadotropin / Q000097:blood*; D005260:Female; D006801:Humans; D008722:Methods; D011247:Pregnancy; D011863:Radioimmunoassay
chemical_list: D006063:Chorionic Gonadotropin