Fig. 5
The effect of SARS-CoV-2 spike protein mutations on viral infectivity. HEK293T-ACE2 cells were infected with the recombinant lentiviruses’ pseudoviruses (0.37 µl, 1 × 107 TU/ml) with the indicated SARS-CoV-2 S protein (wild-type, N354D, or V367F). The y-axis shows the relative luminescence units (RLU) detected at 48 h post-pseudovirus inoculation