Fig. 2.

Effect of GB-1 on cell variability of the 293 T cell line and the interaction between ACE2 and RBD with Wuhan type. (A) 293 T cells were measured by XTT assay after indicated hours of culturing in the presence of GB-1. (B) The indicated compounds were tested to evaluate their ability to inhibit the binding of spike protein to immobilized ACE2 by the ACE2/SARS-CoV-2 spike inhibitor screening assay. All the results are representative of at least three independent experiments. (Error bars=mean±S.E.M. Asterisks (*) mark samples significantly different from control group with p < 0.05).