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. 2017 Feb 10;7:42414. doi: 10.1038/srep42414

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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) Transmission electron microscopy image of magnetic nanobeads. (B) Hydrodynamic size distribution of free magnetic nanobeads and magnetic probes. (C) UV-Vis absorption spectroscopy of free magnetic nanobeads and magnetic probes. (D) Magnetization curves of free magnetic nanobeads and magnetic probes.