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. 2018 Feb 22;8:3491. doi: 10.1038/s41598-018-21802-2

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Real-time magnetic field measurements demonstrating nanoparticle magnetic separation for two different matrix media: (a) water (upper right and left plots); (b) blood (lower right and left plots). For the measurements we use 20 ppm C/Co:water/blood solutions. The large magnetic fluctuations observed during the separation measurements in blood [b2 in (b)] are attributed to particle agglomeration (see supplementary materials).