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Inhibition of SARS-CoV-2 cell entry into Calu-3 lung epithelial cells by ZFH7116 (1) and VD2173 (2) using (A) VSV-SARS-CoV-2-Spike protein Pseudotype virus and (B) VSV-SARS-CoV-2-Spike protein Chimeric virus. EC50s are calculated from an average of three separate experiments. Statistics compare relative infection at each concentration (*P < 0.05, **P < 0.01, ***P < 0.001, Student's t test). Camostat was used as a positive control.
