Figure 2.

Dose-response curves for the antiviral activity of CEP and NFV

(A and B) Dose-response curves for compounds. In (A), secreted viral RNA at 24 hr after inoculation was quantified and plotted against drug concentration and chemical structures shown below each graph (for CEP, the structure of the major component is shown). In (B), viability of cells treated with the compounds was quantified by MTT assay. IC₅₀, IC₉₀, and CC₅₀ values were estimated by median effect model and are shown. These data were from three independent experiments.