title: Comparison of vaginal cytology with plasma progesterone levels in early human pregnancy.
mesh_terms: D000022:Abortion, Spontaneous / Q000097:blood* / Q000473:pathology*; D000328:Adult; D005260:Female; D006801:Humans; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011374:Progesterone / Q000097:blood*; D014621:Vagina / Q000473:pathology*
chemical_list: D011374:Progesterone