title: Formation of A-B cis- and trans-19-norlanosterols by enzymic cyclization of 6'-norsqualene 2,3-oxide.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D003500:Cyclization; D007536:Isomerism; D009654:Norsteroids / Q000138:chemical synthesis; D010087:Oxides; D013185:Squalene; D013261:Sterols / Q000138:chemical synthesis*; D014316:Tritium
chemical_list: D009654:Norsteroids; D010087:Oxides; D013261:Sterols; D014316:Tritium; D013185:Squalene