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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 (http://creativecommons.org/licenses/by/4.0/).
The standard calibration curve for TcdB concentrations was obtained from the HT/HC ratio. (A) QDNBs-LFA, (B) FMs-LFA. The data represent the average of three replicates.