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Effect of cactus polysaccharides on proliferation of lung cancer cells SK-MES-1 cells were treated with cactus polysaccharides (1.44 mg/ml, 0.72 mg/ml, 0.36mg/ml, 0.18 mg/ml, 0.09 mg/ml, 0.045 mg/ml, 0.0225 mg/ml, 0.01125 mg/ml, 0.005625mg/ml) for 24h and 48h. The inhibiting rate of the cell growth was determined by MTT assay and expressed using the following equation: inhibiting rate (%) = (1-Abs test /Abs cont)×100%. *, P<0.05. **, P<0.01.
