title: Changes in unconjugated oestrogens and progesterone concentration in plasma at the approach of labour.
mesh_terms: D004958:Estradiol / Q000097:blood; D004964:Estriol / Q000097:blood; D004967:Estrogens / Q000097:blood*; D005260:Female; D006801:Humans; D007743:Labor, Obstetric; D011247:Pregnancy; D011374:Progesterone / Q000097:blood*; D011485:Protein Binding; D011863:Radioimmunoassay; D013997:Time Factors
chemical_list: D004967:Estrogens; D011374:Progesterone; D004958:Estradiol; D004964:Estriol