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. 2017 Mar 10;7:44210. doi: 10.1038/srep44210

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Copyright © 2017, The Author(s)

This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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(A) Chemical structures and synthetic route for the GA–GFFYK(Cur)E-ss-ERGD (i: glutaricacid anhydride, pyridine, ii: N-hydroxy succinimide (NHS), dicyclohexylcarbodiimide (DCC), DMF, iii: DMF, DIPEA), (B) diagram to illustrate the mechanism of our compounds for tumor targeting therapy.