Fig. 3.

Agarose gel electrophoresis (2 %) of total DNA (a) and caspase-3 activity in pmolmin⁻¹mL⁻¹(b) in Jurkat cells exposed to different concentrations of T. terrestris alkaloids extract at respective time intervals. Vehicle control, positive control and DNA ladder represents DMSO, 5 μM Staurosporine and 1 kb DNA ladder, respectively. The arrowheads represent DNA fragments of 180–200 base pairs and multiples thereof. In caspase-3 assay, the values were normalized from vehicle control and the error bars represents standard error (n = 3) with level of significance (*p < 0.05).