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substantiae nigrae

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sub⋅stan⋅ti⋅a ni⋅gra

  [suhb-stan-shee-uh nahy-gruh, nig-ruh]
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–noun, plural sub⋅stan⋅ti⋅ae ni⋅grae  [suhb-stan-shee-ee nahy-gree, nig-ree] , substantia nigras.
a deeply pigmented area of the midbrain containing dopamine-producing nerve cells.
Origin:
1880–85; < NL: black substance
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Medical Dictionary

Main Entry: sub·stan·tia ni·gra
Pronunciation: s&b-"stan-chE-&-'nI-gr&, -'nig-r&
Function: noun
Inflected Form: plural sub·stan·ti·ae ni·grae /-chE-"E-'nI-(")grE, -'nig-(")rE/
: a layer of deeply pigmented gray matter situated in the midbrain and containing thecell bodies of a tract of dopamine-producing nerve cells whose secretion tends to be deficient in Parkinson's disease
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

substantia nigra substantia ni·gra (nī'grə, nĭg'rə)
n.
A layer of large pigmented nerve cells in the mesencephalon that produce dopamine and whose destruction is associated with Parkinson's disease. Also called nigra.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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