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Saussurea costus extracts induce apoptosis. The representative fluorescent images of the cancer cell lines (a) MCF-7, (b) HepG2, and (c) HCT116 treated with a plant extract for 48 hours and stained with AO/EB. (G) Bar graphs show the percentage of cells of a cell line in different stages of apoptosis after its treatment with a plant extract. Yellow arrow: live cell; green arrow: early apoptotic; red arrow: necrotic; purple arrow: late apoptotic.
