title: Radioimmunological determination of apparent free progesterone concentration in plasma samples of pregnant and non-pregnant women.
mesh_terms: D003956:Dialysis; D005260:Female; D006801:Humans; D008598:Menstruation; D011247:Pregnancy; D011374:Progesterone / Q000097:blood*; D011863:Radioimmunoassay / Q000379:methods*
chemical_list: D011374:Progesterone