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Caspase 3 activity in HeLa and A549 cells after treatment with the plant extract. Cells were treated without or with the extract at 500 μg/mL for 36 h. Caspase 3 activity in untreated cells was taken as 1-fold and the change in the treated cells was expressed by comparing untreated cells. The results are the means (± standard deviation) of three independent experiments
****: p<0.0001
