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Effect of compounds 4a, 4e, and 8a on the percentage of annexin V-FITC-positive staining in MCF-7 cells. The cells were treated with DMSO as control and 4a, 4e, and 8a for 24 h. Q1 quadrant represents dead (necrotic) cells; Q2 quadrant represents late apoptosis; Q3 quadrant represent live cells; Q4 quadrant represents early apoptosis.
