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. 2018 Sep 15;8(3):51. doi: 10.3390/metabo8030051

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© 2018 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Coverage of the human metabolic network. Blue nodes: Covered by MS databases. White nodes: not covered by MS databases. Isolated nodes have been removed for easy viewing of the metabolic network.