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Effect of PPSC on tumor volume (A and B), tumor weight (C) and tumor growth (D) in lewis-bearing C57BL/6 mice. These mice were injected with 0.2 mL Lewis cells (107 cells/mL) and administered orally by PRS (2.5, 5.0 and 7.5 mg/kg) from 2nd day to 14th day. This experiment was repeated for three times and at least 5–6 mice for each. (n = 15−18). Data are expressed as means ± SD. * p < 0.05, ** p < 0.01, PRS or DDP vs. model.
