The immune system) around the peripheral nerve fibers, which mainly consist of lymphocytes and monocytes (7, 55). In addition, in an animal model of the spontaneous autoimmune peripheral polyneuropathy (presymptomatic L31/CD4 / mice), the infiltration of immune cells was noted precisely in the areas of the DRG and spinal roots prior to disease onset (56). Thus, DRGs and dorsal roots theoretically