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. 2014 Dec 10;33(1):104. doi: 10.1186/s13046-014-0104-7

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© Xu et al.; licensee BioMed Central Ltd. 2014

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. 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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Prognostic value of KRAS status analysed either in tumor tissue or plasma samples by PNA-PCR. According to analyses of tumor tissue and plasma, KRAS status of each patient was categorized as: negative (KRAS wild type in tumor and matched plasma samples), discordant, (KRAS status discordant in tumor and matched plasma samples); positive (KRAS mutated either in tumor tissue and matched plasma samples.