Antiproliferative Activity of T. welwitschii Extract on Jurkat T Cells In Vitro

Figure 3

The effects of glutathione on the activity of T. welwitschii. Glutathione (GSH) was used at a concentration of 25 μg⋅mL⁻¹, while a concentration of 19 μg⋅mL⁻¹ of T. welwitschii root methanol extract (extract) was used in this assay. Doxorubicin (dox) was tested against the Jurkat T cells at 1 μg⋅mL⁻¹ and 0.5 μg⋅mL⁻¹. The cells were incubated over a period of 72 h, and cell counts conducted every 24 h using the Trypan blue exclusion assay. To determine significance, all treatments were compared to cells only. Values indicate the mean ± SD for . , .