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Clonogenic assay; (a) colonies of MCF7 cells treated with R. communis for 72 h (from left 0, 0.5, 1, and 2.5 µg/ml; n = 3) in 6-well plates followed by 14 days of extract-free incubation; (b) bar graph showing R. communis concentrations (x-axis) and colony number (Y-axis). Results are expressed as cell number ± SD of three independent experiments.
