Category: N
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Nucleus of origin
Any of the collection of nerve cells giving rise to the fibers of a nerve or nerve tract.
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Nucleus lentis
The core or inner dense section of the crystalline lens.
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Nucleus abducens
A gray nucleus, the origin of the abducens nerve, on the floor of the fourth ventricle, behind the trigeminal nucleus.
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Nucleotoxin
A toxin acting upon or produced by cell nuclei.
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Nucleotidyltransferas
An enzyme that transfers nucleotidyls from nucleosides into dimer or polymer forms.
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Nucleotide-binding oligomerization domain proteins
A family of cytoplasmic proteins that recognize molecules associated with disease-causing bacteria and stimulate cells to secrete cytokines and costimulatory molecules. Inappropriate regulation of nucleotide-binding oligomerization domain proteins has been linked to the pathogenesis of Crohn’s disease and other syndromes.
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Nucleotidase
An enzyme (nucleophosphatase) that splits phosphoric acid from nucleotides, leaving a nucleoside. An enzyme that facilitates the breakdown of a nucleotide into a nucleoside and orthophosphate.
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Nucleospindle
A spindle-shaped body occurring in karyokinesis.
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Nucleosidase
An enzyme that catalyzes the hydrolysis of nucleosides.
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Nucleoreticulum
Any mesh framework in a nucleus.