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Scheme of the generation of pseudotyped vesicular stomatitis virus-severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2) S. (A) Packaging of ppVSV. (B) Optimized conditions for cloning Spike gene. (C) ppVSVΔG-SARS-CoV-2 S assembly in HEK 293T cells, and infection assay in Vero E6 cells by ppVSVΔG-SARS-CoV-2 S.
