TODO - check vert vs invert. Other species: Any of a number of aggregations of neurons, glial cells and their processes, surrounded by a glial cell and connective tissue sheath (plural: ganglia). // Subdivision of neural tree (organ) which primarily consists of cell bodies of neurons located outside the neuraxis (brain and spinal cord); together with a nucleus and its associated nerve, it constitutes a neural tree (organ). Examples: spinal ganglion, trigeminal ganglion, superior cervical ganglion, celiac ganglion, inferior hypogastric (pelvic) ganglion. // a cluster of nerve cells and associated glial cells (nuclear location) // Portion of tissue that contains cell bodies of neurons and is located outside the central nervous system.

http://purl.obolibrary.org/obo/NCBITaxon_9606