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Combination of curcumin (CUR) and luteolin (LUT) synergistically induced necrosis in xenograft colon tumors: (A). Representative images of all groups. Areas of necrosis are pink-orange (asterisks); Intact tumor areas are dark pink-purple. 20× magnification. (B). A box plot showing necrosis of tumors (percentage of total area) within groups. + Significant difference between group and LUT group. ++ p < 0.01. n = 7–9.
