Spinal nerves exist in 31 pairs ... in a collection of nerve fibers between vertebrae called the dorsal root ganglion. When this virus becomes active later in life, it causes shingles.

Also referred to as the greater superficial petrosal nerve, it’s related to structures called the pterygopalatine ganglion ..

Figure 3: Spinal nerves are targeted to neurotrophin-soaked ... (n = 65), labeling was restricted to cells of the dorsal root ganglion (Fig. 3b). In the remaining cases where labeling was also ...