FIG. 4.
Inhibitory activities of compounds 3 and 4 against replicon NS5B mutants. Filled symbols represent compound 3, and empty symbols represent compound 4. Inhibitory activities are reported as n-fold changes in EC50 relative to the EC50 obtained against the ET replicon. Compounds with n-fold EC50 changes above the dotted line were considered to be less active than against the ET reference strain.