title: Plasma levels of estrogens during long-term treatment with depo-medroxyprogesterone acetate as a contraceptive agent.
mesh_terms: D002850:Chromatography, Gel; D003692:Delayed-Action Preparations; D004958:Estradiol / Q000097:blood; D004970:Estrone / Q000097:blood; D005260:Female; D006801:Humans; D007273:Injections, Intramuscular; D008525:Medroxyprogesterone / Q000008:administration & dosage / Q000378:metabolism; D011863:Radioimmunoassay; D013997:Time Factors
chemical_list: D003692:Delayed-Action Preparations; D004970:Estrone; D004958:Estradiol; D008525:Medroxyprogesterone