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Cytotoxicity effect of OBs DAST, FB-28, and FB-71 in breast cancer cells. Breast cancer cell lines MBA-MD-468 (A-C) and MCF-7 (D-F) were seeded in a 96-well plate treated with different concentrations (0, 1, 5, 10 and 25 µM) of OBs and then cell viability was evaluated by MTT assay after an incubation time of 24h, 48h and 72h. The total percentage of MTT in control cells is taken as 100%.
