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Percentages of the MCF-7 cell viability after 72 h treatment with A. fulica crude mucus and six HPLC-separated fractions (F1, F2, F3, F4, F5 and F6) at the concentration of 1000 μg/ml. The cell viability was measured by the MTT assay. Control was the untreated cells. Error bars represented the SEM, * and ** represented levels of significance at p < 0.05 and p < 0.01.
