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. 2020 Sep 12;99(1):115206. doi: 10.1016/j.diagmicrobio.2020.115206

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Fig. 4 — Graphical representation of SARS CoV-2 N genes in spiked pool (SP) (1:9) at RNA (R) and sample (S) level compared to individual positive samples (PS). Results represent mean ± SD of the triplicates.