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SC, SCA, SCH, and SCAH induce apoptosis in A-549 cells. Flow-cytometric analysis of Annexin V-fluorescein isothiocyanate (FITC)/propidium iodide (PI)-stained A-549 cells treated without and with 200 μg/mL SC, SCA, SCH, and SCAH for 48 h: (A) histograms; (B) bar chart. Bars in the same cell population bearing different letters (in a, b, c, and d) significantly differ at the level of 0.05. Experiments were repeated three times.
