Objective To explore the effect of protein powder on immunological function.Methods\ The BALB/c mice were divided into three groups,and each group was divided into four groups.And individually to test the ratio of spleen-thymus/body weight,T lymphocyte proliferation of mouse spleen induced by ConA,the response of delayed hypersenitivity,the amount of hemolytic antibility in serum, antiboty-producing cell assay,phagocytic activity of macrophages and the ability of macrophages for carbon particle clearance an...