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. 2020 Mar 17;8:170. doi: 10.3389/fbioe.2020.00170

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Copyright © 2020 Zhang, Zhang, Wang, Wang, Bai, Zhang, Zhao, Yu and Wang.

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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Synthesis and characterization of MSNs. (A,B) TEM image of MSNs at different magnifications. (C) SEM image of MSNs. (D) The mesoporous morphology and mesoporous distribution (inset) of MSNs were determined by the N₂ adsorption-desorption isotherms. (E) Dynamic light scattering (DLS) determination of the particle diameter of MSNs.