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. 2017 Sep 12;14:175. doi: 10.1186/s12985-017-0846-x

Fig. 1.

Fig. 1

The algorithm used in this study. A depicts the 5′-UTR assay. B and C show the two VP1 assays. While B has only one stage of PCR, C has two consecutive stages (snPCR) of PCR