Figure 1From: Extracts of Euphorbia hirta Linn. (Euphorbiaceae) and Rauvolfia vomitoria Afzel (Apocynaceae) demonstrate activities against Onchocerca volvulus Microfilariae in vitro Percentage inhibition of monkey kidney cells lines maintained in culture for one day before exposure to Euphorbia hirta extracts for 5 days 1 . 1. Percentage inhibition of potassium cyanide (KCN) at 103 μg/ml = 131%; the optical density (OD) values for: 1% DMSO (solvent control) = 0.069, cells cultured in plain culture medium = 0.093, and for heat killed cells = −0.015 (negative figures imply promotion of cell maintenance).Back to article page