title: Changing placental concentrations of human chorionic gonadotropin and its subunits during gestation.
mesh_terms: D006063:Chorionic Gonadotropin / Q000378:metabolism*; D002850:Chromatography, Gel; D005260:Female; D005865:Gestational Age; D006801:Humans; D007457:Iodine Radioisotopes; D010920:Placenta / Q000378:metabolism*; D011247:Pregnancy; D011863:Radioimmunoassay; D013997:Time Factors
chemical_list: D006063:Chorionic Gonadotropin; D007457:Iodine Radioisotopes