FIGURE 4. 
SOURCE: 
Visceral Stimulation 
These schematics illustrate the cervical (C5) through 
lumbrosacral (L6-S1) distribution of Fos-immunoreactive ceils in 
response to noxious visceral stimulation. Note that the densest 
staining is at the thoracolumbar junction (T13’L1), and the most 
extensive rostrocaudal distribution of labeled cells was found in 
the superficial dorsal horn. 
Men6trey, D.; Gannon, A.; Levine, J.D.; and Basbaum, A.I. 1989. 
Journal of Comparative Neurology. Copyright © 1 989 by Wiley- 
Liss. Reprinted by permission of Wiley-Liss, a division of John 
Wiley and Sons, Inc. 
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