Fig. 2. Typical examples of distribution of herpes simplex virus antigen–positive cells in the dorsal root ganglion after inoculation. BALB/c (  A ) and C57BL/6 (  B ) mice were inoculated with herpes simplex virus type I on the unilateral hind paw. Six days later, immunostaining of the dorsal root ganglion (L5 level) on the inoculated side for the herpes simplex virus antigen was performed.  Scale bar = 100 μm.