Figure 4From: In vitro anti-Herpes simplex virus activity of crude extract of the roots of Nauclea latifolia Smith (Rubiaceae) Effect of N. latifolia treatment on plaque formation when added to cell cultures at different time intervals relative to virus infection. Cells were pre-treated with extract prior to virus infection (pre-treatment), during the attachment period (attachment), during the entry period (entry) or after infection (post-treatment). Data are presented as % of control. Values are mean ± SD of three separate determinations.Back to article page