To expound the immune mechanism of astragalus polysaccharides. The drug ( APS) could regulate the body’s immune function by immune organs, immune cells and immune molecules.It could play a role through the multi-level ,both through the body’ s non-specific immune also specific immunity,and both normal and abnormal body.Therefore APS could be more widely used in the treatment and prevention of animal diseases.%对黄芪多糖的免疫作用机制研究进展进行阐述,该药物可以通过调节免疫器官,免疫细胞及免疫分子发挥对机体的免疫作用,通过多层次共同发挥作用,既能增强机体的非特异性免疫又能通过特异性免疫功能,对正常及非正常机体都发挥着免疫作用,可更广泛的应用于动物疾病的治疗与预防。
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