eLS (previously known as the Encyclopedia of Life Sciences) is a reference work that covers the life sciences; it is published by Wiley-Blackwell.
[1] As of June 2012, there were more than 4,800 article topics published in eLS online.
[citation needed] eLS is available online and in a print edition.
Article abstracts, key concepts, figures and references are freely accessible.
At the end of 2004, eLS was acquired by Wiley-Blackwell from the Nature Publishing Group.