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. 2017 Sep 8;7:10974. doi: 10.1038/s41598-017-11387-7

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© The Author(s) 2017

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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Dynamic response of the FET biosensor towards non-specific proteins suspended in 0.01 × PBS. (a) Avidin. (b) SUDV GP. (c) MARV GP. (d) Comparison of sensitivity as a function of protein concentration. The data was collected by five independent replicates. The specific binding of EGP leads to a higher sensitivity compared with other non-specific proteins. For (a–c), V_ds was fixed at 0.01 V.