From Citizendium, the Citizens' Compendium
|Anthony.Sebastian nominated the version dated 06:48 15 November 2010, PST of this article for approval. One other editor supported the approval (Gareth Leng). The Biology Workgroup and Chemistry Workgroup oversaw this approval and the article was approved on, or around, November 16, 2010.|
Re-certified by the Approvals Committee in February 2018.