Immunolocalization of serotonin in Onychophora argues against segmental ganglia being an ancestral feature of arthropods-0

<p><b>Copyright information:</b></p><p>Taken from "Immunolocalization of serotonin in Onychophora argues against segmental ganglia being an ancestral feature of arthropods"</p><p>http://www.biomedcentral.com/1471-2148/7/118</p><p>BMC Evolutionary Biology 2007;7():118-118.</p><p>Published online 15 Jul 2007</p><p>PMCID:PMC1933538.</p><p></p>o one of the peripheral nerves innervating the body wall musculature (only nerve roots are shown). Abbreviations: co, commissure; le, leg nerve; vn, ventral nerve cord