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Acridine orange/propidium iodide double staining of HT-29 cells after 72 h exposure: (a) untreated (control); (b) 0.25µM doxorubicin; (c) 400µM C-ori; and (d) 0.25µM doxorubicin + 400µM C-ori. VC = viable cells; BL = membrane blebbing; EA = early apoptosis; LA = late apoptosis; CC = chromosome condensation. Magnification: 40× and 100×.
