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Medical Definition of Roller's nucleus
1. Lateral nucleus of the accessory nerve, a small bulbar nucleus lying immediately anterior to the hypoglossal nucleus, considered one of the perihypoglossal nuclei. (05 Mar 2000)
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1. Lateral nucleus of the accessory nerve, a small bulbar nucleus lying immediately anterior to the hypoglossal nucleus, considered one of the perihypoglossal nuclei. (05 Mar 2000)