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. 2020 Dec 10;10(12):2363. doi: 10.3390/ani10122363

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© 2020 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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Calibration curve and lidocaine quantitation by GC–MS. (A) Standard curve for various lidocaine concentrations quantified (in duplicate) by GC–MS. (B) Quantitation of lidocaine extracted from each type of lidocaine-loaded castration band (LLB). Note that, for the Callicrate bands, only a section of the band (corresponding with the surface that would contact the animal’s scrotum) was analyzed. Bars represent the mean ± standard deviation for 6 (green), 3 (beige), or 4 (Callicrate) independent replicates.