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ELS cover the entire scope of the life sciences. 5,000 of the world's leading scientists are contributing over 3,000 signed articles. All articles are original and are peer-reviewed. Extensive tables and over 6000 figures including illustrations and photographs, in color and black-and-white illuminate the text. ELS is extensively cross-referenced and indexed, with an estimated 30,000 internal links and up to 180,000 index entries.