Figure 4.

Anti-herpetic activity and cytotoxicity of Saussurea costus extract. (A) Vero cells were incubated with increasing concentrations of the acetic extract, and after 72 h, the cytotoxicity was measured as described in the Materials and Methods. (B) Vero cells were infected at MOI 1.5 with HSV-1 and incubated with increasing concentrations of the extract. After 48 h, the virus genome was quantitated in the supernatant via qPCR. The percentage of inhibition was determined as the ratio between treated and untreated infected cells. Data are expressed as mean +/− SD for n = 2.