Morphological studies of the origins of axons in
the medial DC that might mediate the transmission of visceral
nociceptive information. The retrograde tracer, WGA-HRP, was injected
into the DCs at the cervical level, taken up by axons, and transported
caudally to label numerous cell bodies in the central region of the
spinal cord adjacent to the central canal (CC). [Figure reproduced
with permission from ref. 5 (Copyright 1996, International Association
for the Study of pain).]