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. 2010 Jul 26;16(3):306–314. doi: 10.5056/jnm.2010.16.3.306

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Copyright © 2010 Korean Society of Neurogastroenterology and Motility

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Comparison of serotonin (5-HT) expression between electroacupuncture (EA) and sham acupuncture (SA) groups. Immunohistochemistry showed significantly lower 5-HT expression (arrowed) in the dorsal raphe nucleus of the brain (A, EA; B, SA; ×40) and laminae I & II of superficial dorsal horn of the spinal cord (C, EA; D, SA; ×40) in rats treated with EA compared to those treated with SA. There was no difference in 5-HT expression at colonic mucosa between the 2 groups (E, EA; F, SA; ×40).