Nissl body


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Related to Nissl body: Nissl granules

Nissl body

[nis′əl]
Etymology: Franz Nissl, German neurologist, 1860-1919
any one of the large granular structures in the cytoplasm of nerve cells that stains with basic dyes and contains ribonucleoprotein.

Nissl body

Large granular bodies found in nerve cells. They can be demonstrated by selective staining. They are rough endoplasmic reticulum (with ribosomes) and are the site of protein synthesis. Nissl bodies show changes under various physiological conditions, and in pathological conditions they may dissolve and disappear (chromatolysis).
Synonym: Nissl granule See: tigroid bodies.
See also: Nissl, Franz