* P < 0.05 was considered significant, and ** P < 0.01 was considered highly significant. 3 Results 3.1 Purification, homogeneity and molecular weight of AAPS-1a The total polysaccharide (AAPS) was extracted from the Qi-Gui herb pair and purified using DEAE Sephadex A-25 and Sephadex G-100 columns.
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Structural characterization of a polysaccharide from Qi-Gui herb pair and its anti-tumor activity in colon cancer cells.
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