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. 2019 Nov 29;9:1295. doi: 10.3389/fonc.2019.01295

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Copyright © 2019 Wang, Ding, Zhu, Wang, Pan and Tong.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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cfDNA content and KRAS mutation in PC and PB patients. (A–C) Detection of total cfDNA amount and KRAS MAF in ctDNA and tissue in PC and PB diseases. (D) Correlation between KRAS MAF in ctDNA and cfDNA concentration. (E,F) Comparison of KRAS MAF in ctDNA and matched tissue. ^**p < 0.01; ^***p < 0.001; NS, not significant.