Figures were generated using GraphPad Prism 8 software (GraphPad, San Diego, CA, USA) and Microsoft Excel. Values are shown as means with range. The least squares fit of Abs is calculated by sigmoidal 4PL (where X is log concentration) standard curve. Spearman's correlation coefficient (r 2) heatmap of virus strain was generated using Python language (https://www.python.org).
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