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. 2021 May 17;11:670490. doi: 10.3389/fonc.2021.670490

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Copyright © 2021 Yan, An, Xu, Wang, Sun and Sun

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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Comparison of immunomodulatory drugs’ targets in clinical trials for metastatic colorectal cancer between two clusters. The P values are labeled using asterisks (ns, no significance, **P < 0.01, ***P < 0.001).