Decrease of viral DNA as a function of the duration of the exposure to resveratrol. Left panel: Progeny viral DNA (form I) is indicated by the arrow. In this case, the culture medium was changed to fresh drug-free medium at the following times post-infection. The incubation was continued for 24 hours. Lane 1: Mock infected cells; Lane 2: Untreated control cells; Lane 3 through 6: 4, 8, 12 and 16 hours, respectively; Lane 7: The medium was not changed and infection was carried permanently in the presence of RV (20 μM). Right panel: Quantification of the fluorescence bands reported in the left panel. The yield of the viral DNA is normalized to the amount obtained in untreated control cells (Bar 1). Withdrawal of RV is reported in the legend to left panel of this figure.