Yang Lingci edge biotechnology co., LTD (Room 3–316, Chuangye Building, No. 16 shennong Road, Yangling Demonstration Zone, Shaanxi Province) supplied AP with 90% purity. The polysaccharides were extracted from Angelica Sinensis by boiling distilled water then followed by precipitation by 70% ethanol. It was then deprotenised and dialysis, the crude polysaccharide extract was deproteinized using the Sevag method, then lyophilized for the subsequent experiment [11].
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