Green tea polysaccharides was modified by using glycosidase extracted from tea,the effect of enzymatic modification of green tea polysaccharides on immune function of the immunosuppressant mice inhibited by cyclophosphamide was studied.The results showed that,TPS and ETPS were positive in the cell immune function,humor immune function,mononuclear macrophage function and NK cell activity tests.So it can be concluded that they could obviously improve both the cell immune function and humor immune function in ...