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. 2018 Jun 6;8:8682. doi: 10.1038/s41598-018-26982-5

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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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Results of the colorimetric test for the sensitivity of the LAMP-microfluidic chip detection method. (A) Sensitivity for mixed DNA samples of peanut, sesame and soybean in LAMP-microfluidic chips. From right to left, allergen primers of peanut, sesame, soybean and control water were added to each. The concentration gradient of the mixed DNA sample was 1, 0.8, 0.6, 0.4, 0.2, and 0 ng/μL from (i) to (vi), respectively. (B) For (i) to (iii) the primers added were the allergen primers for peanut, sesame and soybean, respectively. The concentration gradient of the mixed DNA sample was 1, 0.8, 0.6, 0.4, 0.2, and 0 ng/μL.