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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 (https://creativecommons.org/licenses/by/4.0/).
Calibration curve for DPA concentrations from 0 to 1 μM monitored at 545 nm in a microplate fluorometer. The correlation coefficient of the DPA standard curve is 0.9949. Error bars represent means ± SD (n = 5).