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. 2017 Mar 17;7:44758. doi: 10.1038/srep44758

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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) In vivo fluorescence images of MSCs-PLGA-DiR and PLGA-DiR in lung melanoma metastasis-bearing mice after intravenous injection at determined time points (0.5, 1, 3, 24, 72 hrs). (B) Fluorescence images of frozen lung section with PLGA-DOX loaded MSCs on day 3 after drug injection. (Scale bar = 100 μm).