title: Prognostic value of plasma progesterone-R.I.A. in threatened abortion.
mesh_terms: D000033:Abortion, Threatened / Q000097:blood / Q000175:diagnosis*; D005260:Female; D006801:Humans; D011247:Pregnancy; D011374:Progesterone / Q000097:blood*; D011379:Prognosis; D011863:Radioimmunoassay
chemical_list: D011374:Progesterone