Source:http://linkedlifedata.com/resource/umls/id/C0682706
FMA: Internal gray matter component of neuraxis which consists of a discrete aggregate of neuronal soma. Example: dentate nucleus, red nucleus.,UWDA: Subdivision of neural tree (organ) which consists of an aggregation of neurons the axons of which form a nerve or a tract; together with the nerve and associated ganglia, it constitutes a neural tree (organ). Examples: occulomotor nuclear complex, facial nucleus, vestibular nucleus, hypoglossal nerve nucleus.