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Apoptotic effects of C. nutans root extracts on MCF-7 cells. Cells were treated with C. nutans root extracts and camptothecin for three days at the indicated concentrations. Data represent three independent experiments performed in triplicate. Asterisks denote differences with statistical significances compared to untreated cells (*, ** and *** represent p < 0.05, p < 0.005 and p < 0.0005 respectively). p-values were obtained from a two-tailed t-test.
