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Cell cycle distribution of MCF-7 and MDA-MB231 cells after the addition of liposomes. Cells were treated with 100 µL of liposomes per 1 mL of culture media for the indicated time (0, 24, 48, 72, and 96 h) and stained with propidium iodide to analyze their cell cycle distribution by FACS (BD FACSCalibur™). Results are presented as the mean ± SEM of three independent experiments.
