title: Pattern of the human chorionic somatomammotrophic (HCS) concentration ratio in maternal serum and amniotic fluid during normal pregnancy.
mesh_terms: D000653:Amniotic Fluid / Q000378:metabolism*; D006063:Chorionic Gonadotropin / Q000097:blood / Q000378:metabolism; D005260:Female; D006801:Humans; D007457:Iodine Radioisotopes; D010928:Placental Lactogen / Q000097:blood / Q000378:metabolism*; D011247:Pregnancy; D011863:Radioimmunoassay; D013997:Time Factors
chemical_list: D006063:Chorionic Gonadotropin; D007457:Iodine Radioisotopes; D010928:Placental Lactogen