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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/).
Threshold cycles (Ct), the concentration of serial dilutions of pGEM®-T Easy plasmids, the copy number of SARS-CoV-2 (A) and ABL1 (B) cDNA, as well as graphical RT qPCR curves of patient No. 23. The samples are colored blue, SARS-CoV-2 serial dilutions—red, ABL1 serial dilutions—green.