双歧杆菌为机体肠道内膜菌群的最主要成份，能激活机体的免疫系统，特别是其中的巨噬细胞，对Ｂ淋巴细胞、ＮＫ细胞也有激活作用，对Ｔ淋巴细胞的影响则未定论。双歧杆菌的免疫激活作用对维持它的抗肿瘤、抗衰老、抵御病原微生物的入侵及提高粘膜的局部免疫等均具有重要意义 Bifidobacterium is the most important component of the body’s intestinal endometrium flora, which can activate the body’s immune system, especially the macrophages therein. It also has an activating effect on B lymphocytes and NK cells, but has no effect on T lymphocytes s. Immune activation of Bifidobacteria is of great importance to maintain its anti-tumor, anti-aging, resistance to invasion of pathogenic microorganisms and local mucosal immunity