Fig 6.

Resistance of HCMV UL97Δ498 to CPV and GCV. HFF infected with a wild-type HCMV engineered with the deletion of UL97 bp 498 (dashed lines) were exposed to increasing concentrations of either CPV (■) or GCV (▲) and were compared to cells infected with a wild-type virus (solid lines) exposed to the same concentrations of drugs. Values are means ± standard deviations from at least four experiments. Asterisks indicate that the replication of HCMV UL97Δ498 is significantly different (P < 0.01) from that of the wild-type virus (with both drugs).