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. 2016 Oct 7;8:53. doi: 10.1186/s13321-016-0165-z

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© The Author(s) 2016

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 1 — The title and abstract of a sample document (PMID 2375138). Chemical and disease mentions are marked in green and yellow respectively. <D008874, D012140> and <D008874, D006323> are two CID relation pairs