Fig. 4.

Dose-dependent suppression of HCMV replication by the EtOAc fraction of ESE. HFF cells were infected with serially diluted HCMV-Towne and treated with either DMSO or the EtOAc fraction of ESE at concentrations of 5, 10, 25 or 50 μg/ml. Cells were re-treated with DMSO or the EtOAc fraction of ESE every 3 days after infection. At 14 days following infection, the number of plaques was counted to determine pfu/ml using a plaque assay