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. 2019 May 20;2:189. doi: 10.1038/s42003-019-0435-1

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© The Author(s) 2019

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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Fig. 6 — Measurement of miR-21 expression in human serum samples using the integrated device for two cohorts, one healthy and one with liver cancer. In serum, the expression level for the liver cancer group is nearly 13 times greater than that of the healthy (control) group. For healthy and liver cancer groups, data sets show the average of three and nine data points, respectively. The error bars represent the uncertainty at 95% confidence in all cases