title: Degradation of steroids by intestinal bacteria. IV. The aromatisation of ring A.
mesh_terms: D015068:17-Ketosteroids / Q000378:metabolism; D000736:Androstenes / Q000378:metabolism*; D002855:Chromatography, Thin Layer; D003013:Clostridium / Q000201:enzymology / Q000254:growth & development / Q000378:metabolism*; D004790:Enzyme Induction; D004926:Escherichia coli / Q000254:growth & development / Q000378:metabolism*; D004958:Estradiol / Q000096:biosynthesis*; D004962:Estranes / Q000096:biosynthesis*; D006914:Hydroxysteroids / Q000096:biosynthesis; D007422:Intestines / Q000382:microbiology*; D013058:Mass Spectrometry; D009247:NADH, NADPH Oxidoreductases; D013056:Spectrophotometry, Ultraviolet
chemical_list: D015068:17-Ketosteroids; D000736:Androstenes; D004962:Estranes; D006914:Hydroxysteroids; D004958:Estradiol; D009247:NADH, NADPH Oxidoreductases