“…exhibited IC 50 values less than 20 mg ml À1 (Table 1), indicating their potent anti-proliferative effects. 25,54 As depicted in Table 1, the n-butanol fraction exerted the greatest inhibitory activity against MCF7 cells, followed by the ethyl acetate fraction, total extract, and acetone fraction, with interesting IC 50 values of 2.30 AE 0.07, 9.96 AE 0.32, 13.95 AE 0.45, and 15.25 AE 0.50 mg ml À1 , respectively, which were even more potent than staurosporine (IC 50 ¼ 20.30 AE 0.6 mg ml À1 ). The petroleum ether fraction, on the other hand, showed weaker cytotoxicity against MCF7 cells (IC 50 ¼ 27.45 AE 0.90 mg ml À1 ).…”