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. 2017 Aug 17;9(8):250. doi: 10.3390/toxins9080250

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© 2017 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Standard curves for DA detection. (A) Standard curve was obtained by plotting (B/B0) against DA concentration. The equation was y = 0.447/(1 + (x/0.0349)^0.795), and the correlation coefficient (R²) was about 0.98; (B) The linear portion of standard curve. y = 0.2507 − 0.0452x with the correlation coefficient (R²) 0.99.