Found in articles
Archivo:Trimethyl steroid-nomenclature.png
  Description: Chemical structure of steroid, numbering nomenclature Author, date of creation: selfmade by Shaddack, 21 October 2005 Source: self-made
Archivo:Steroid numbering.png
DescriptionSteroid numbering.png English: Standard IUPAC ring and atom numbering of the steroid skeleton according to http://www.chem.qmul.ac.uk/iupac/steroid/
Archivo:Abeo-nomenclature.png
DescriptionAbeo-nomenclature.png English: Abeo-nomenclature 10(5→6)abeo- transformation Date 17 June 2013, 20:13:15 Source Own work Author Mfomich
Archivo:5alpha5betaSteroidIUPAC.png
Description5alpha5betaSteroidIUPAC.png English: Prototypical steroid 5alpha and 5beta stereoisomers, after Moss-IUPAC (1990). The two isomers are defined
Archivo:CYP21Aevolution.png
"The P450 superfamily: updated listing of all genes and recommended nomenclature for the chromosomal loci.". DNA (Mary Ann Liebert, Inc.) 8 (1): 1-13