title: Significant fall in progesterone and rise in oestradiol levels in human peripheral plasma before onset of labour.
mesh_terms: D000328:Adult; D000818:Animals; D001800:Blood Specimen Collection; D004958:Estradiol / Q000097:blood*; D005260:Female; D006801:Humans; D007743:Labor, Obstetric; D011247:Pregnancy; D011374:Progesterone / Q000097:blood* / Q000494:pharmacology / Q000502:physiology; D011863:Radioimmunoassay; D012756:Sheep / Q000502:physiology; D013997:Time Factors; D014599:Uterus / Q000187:drug effects
chemical_list: D011374:Progesterone; D004958:Estradiol