title: Human fetal and maternal plasma oestrogens and the onset of labour.
mesh_terms: D001769:Blood; D001800:Blood Specimen Collection; D002585:Cesarean Section; D004958:Estradiol / Q000097:blood; D004967:Estrogens / Q000097:blood*; D004970:Estrone / Q000097:blood; D005260:Female; D005333:Fetus / Q000032:analysis*; D006801:Humans; D007743:Labor, Obstetric; D008431:Maternal-Fetal Exchange; D011247:Pregnancy; D014469:Umbilical Arteries; D014470:Umbilical Cord / Q000032:analysis; D014471:Umbilical Veins
chemical_list: D004967:Estrogens; D004970:Estrone; D004958:Estradiol