Fig. 4

The effect of reduced—glutathione (GSH) on the cytotoxic activity of A.pungu and V. verrucosum. The effect of combining GSH and crude methanolic plant extracts of A. pungu and V. verrucosum was evaluated on normal murine peritoneal cells. GSH and crude methanolic plant extracts were used at concentration of 25 and 250 µg/mL respectively. The cells were incubated with the test solution and cell viability was determined after 72 h. To determine significance (cells + extracts) was compared with (cells + extracts + GSH). ****P < 0.0001 and *** P 0.0001. The addition of GSH to A. pungu and V. verrucosum increased the percentage of viable normal murine peritoneal cells