The present study demonstrates synaptic contact between calcitonin gene-related peptide (CGRP)-like immunoreactive axon terminals and sympathetic neurons in the rat celiac ganglion. Our observations suggest that sensory ganglion neurons directly regulate the sympathetic activity via synapses, because CGRP immunoreactive (CGRPI) fibers in this ganglion are supplied by the sensory ganglia.

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http://dx.doi.org/10.1016/0006-8993(87)91229-7DOI Listing

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