title: Formation of estra-1,3,5(10)-triene-3,15 alpha, 16 alpha, 17 beta-tetrol (estetrol) and estra-1,3,5(10)-triene-3,15 alpha, 17 beta-triol from neutral precursors.
mesh_terms: D000731:Androstanes / Q000378:metabolism*; D001711:Biotransformation; D002247:Carbon Isotopes; D002624:Chemistry, Clinical; D002845:Chromatography; D003460:Crystallization; D003687:Dehydroepiandrosterone / Q000378:metabolism*; D004967:Estrogens / Q000096:biosynthesis* / Q000302:isolation & purification / Q000652:urine; D005260:Female; D006801:Humans; D011247:Pregnancy; D011865:Radioisotope Dilution Technique; D014316:Tritium
chemical_list: D000731:Androstanes; D002247:Carbon Isotopes; D004967:Estrogens; D014316:Tritium; D003687:Dehydroepiandrosterone