NGF was mainly distributed in macrophages like and lymphocytes like cells in the outer layer of periarterial lymphocyte sheath (PALS) of white pulp,marginal zone(MZ) and red pulp(RP).

• NGF主要分布于白髓动脉周围淋巴鞘（PALS）外层、边缘区（MZ）和红髓（RP）的巨噬细胞样和淋巴细胞样细胞；