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. 2023 Jan 20;20:13. doi: 10.1186/s12985-023-01961-z

Fig. 2.

Fig. 2

A Plot the one-step growth curve of the virus. B Infection by the isolated viruses passaged up to passage 12 was observed microscopically for 60 h. C ORF3 recombinant plasmids were prepared to generate a standard curve. D Viral load assays were performed at 60 h, 72 and 84 h of CH/HLJJS/2022 infection (n = 3, P > 0.005)