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. 2016 Dec 12;6:38931. doi: 10.1038/srep38931

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Copyright © 2016, 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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CLSM images of HeLa cells incubated with MSN-HP-DOX@CeO₂ accompanied with light irradiation (a–c), MSN-HP-DOX@CeO₂ without light irradiation (d–f) and DOX (g–h): panels b, e and h are blue channels with Hoechst 33342; panel c, f and i are red channels for DOX; panels a, d and g are merged images of panels b,c, e-f and h,i, respectively. Scale bar: 50 μm.