page 71:
Lewis rats are much more likely to develop autoimmune disorders after sympathectomy (Dimitrova and Felten, 1995).
This finding suggests that if sympathetic regulation were impaired in a genetically predisposed individual, an autoimmune disease might develop.
Betrayal by the Brain: The Neurologic Basis of Chronic Fatigue Syndrome, Fibromyalgia Syndrome and Related Neural Network Disorders
by Jay A. Goldstein
published by The Haworth Medical Press, 1996