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

Figure 5

Effect of T. welwitschii and doxorubicin on Jurkat T cells measured using the propidium iodide assay. Jurkat T cells were exposed to the plant extract and doxorubicin alone and in combination before the effect was measured using propidium iodide at excitation and emission wavelengths 544 nm and 612 nm, respectively. The growth of the cells is expressed as test/control × 100%. T. welwitschii: 1: 3.125 μg⋅mL⁻¹; 2: 6.250 μg⋅mL⁻¹; 3: 12.50 μg⋅mL⁻¹; 4: 25 μg⋅mL⁻¹; 5: 50 μg⋅mL⁻¹; 6: 100 μg⋅mL⁻¹; 7: 150 μg⋅mL⁻¹; 8: 200 μg⋅mL⁻¹. Doxorubicin: 1: 0.25 μg⋅mL⁻¹; 2: 0.5 μg⋅mL⁻¹; 3: 1 μg⋅mL⁻¹; 4: 2 μg⋅mL⁻¹; 5: 3 μg⋅mL⁻¹; 6: 4 μg⋅mL⁻¹; 7: 5 μg⋅mL⁻¹; 8: 8 μg⋅mL⁻¹.