Fig. 4.

Effect of sciatic nerve transection on the number of p75-ir ring structures surrounding neurons. The neurons surrounded by p75-ir glia or nerve fibers were counted as described in Materials and Methods and are plotted as mean ± SEM (n = 4). The percentage of neurons with ring structures in ipsi- and contralateral DRG after sciatic nerve lesion was significantly increased with postlesion time (asterisks indicate p < 0.05 compared with control).