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Segmental organization of sympathetic preganglionic neurons in the mammalian spinal cord
Author(s) -
Rubin Eric,
Purves Dale
Publication year - 1980
Publication title -
journal of comparative neurology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.855
H-Index - 209
eISSN - 1096-9861
pISSN - 0021-9967
DOI - 10.1002/cne.901920111
Subject(s) - horseradish peroxidase , spinal cord , biology , anatomy , cats , neuroscience , ganglion , cell bodies , synapse , central nervous system , medicine , biochemistry , enzyme
We have used retrograde transport of horseradish peroxidase to determine the distribution of the preganglionic cell bodies whose axons join particular rami of the thoracic spinal cord in a series of guinea pigs, and in a small number of hamsters and cats. In contrast to other recent studies, our results show that the neurons sending axons to a ramus are confined to a single segment at the corresponding spinal level. This segmental organization supports the idea that the rostro‐caudal position of preganglionic cell bodies is one determinant of selective synapse formation between preganglionic axons and sympathetic ganglion cells.