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Nuclei of origin

nuclei of origin pl.n.
Collections of motor neurons forming a column continuous in the spinal cord but discontinuous in the medulla and pons and giving origin to the spinal and cranial motor nerves. Also called motor nuclei.


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  • Nucleo-

    1. a combining form representing nucleus, nuclear, or nucleic acid, in compound words: nucleoprotein. combining form 1. nucleus or nuclear: nucleoplasm 2. nucleic acid: nucleoprotein nucleo- or nucle- pref.

  • Nucleocapsid

    [noo-klee-uh-kap-sid, nyoo-] /ˌnu kli əˈkæp sɪd, ˌnyu-/ noun, Microbiology. 1. the nucleic acid core and surrounding of a virus; the basic viral structure. nucleocapsid nu·cle·o·cap·sid (nōō’klē-ō-kāp’sĭd, nyōō’-) n. The basic structure of a virus, consisting of a core of nucleic acid enclosed in a protein coat.

  • Nucleofugal

    nucleofugal nu·cle·of·u·gal (nōō’klē-ŏf’yə-gəl, -ŏf’ə-, nyōō’-) adj.

  • Nucleohistone

    nucleohistone nu·cle·o·his·tone (nōō’klē-ō-hĭs’tōn’, nyōō’-) n. A nucleoprotein whose protein part is a histone.

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