title: Occurrence of 19-oxoandrost-4-ene-3,17-dione in the course of oestrogen biosynthesis by equine testicular microsomes.
mesh_terms: D015068:17-Ketosteroids / Q000032:analysis / Q000037:antagonists & inhibitors / Q000378:metabolism; D000731:Androstanes / Q000037:antagonists & inhibitors / Q000378:metabolism*; D000818:Animals; D001711:Biotransformation; D002247:Carbon Isotopes; D002855:Chromatography, Thin Layer; D003460:Crystallization; D004967:Estrogens / Q000096:biosynthesis*; D004970:Estrone / Q000037:antagonists & inhibitors; D006736:Horses; D066298:In Vitro Techniques; D008297:Male; D008861:Microsomes / Q000378:metabolism*; D013057:Spectrum Analysis; D013737:Testis / Q000166:cytology / Q000378:metabolism; D014316:Tritium; D014466:Ultraviolet Rays
chemical_list: D015068:17-Ketosteroids; D000731:Androstanes; D002247:Carbon Isotopes; D004967:Estrogens; D014316:Tritium; D004970:Estrone