Spinal sympathetic pathway: an enkephalin ladder

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Science  17 Aug 1984:
Vol. 225, Issue 4663, pp. 737-739
DOI: 10.1126/science.6463650


Enkephalin distribution was examined in autonomic areas of the rat thoracic spinal cord. The localization of enkephalin fibers coincided with nuclear regions containing sympathetic preganglionic neurons. Horizontal sections revealed a pattern for enkephalin fibers resembling Laruelle's description of the localization of sympathetic preganglionic neurons as rungs of a ladder.

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