Nissl body
Rough endoplasmic reticulum structure found in neurons / From Wikipedia, the free encyclopedia
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In cellular neuroscience, Nissl bodies (also called Nissl granules, Nissl substance or tigroid substance) are discrete granular structures in neurons that consist of rough endoplasmic reticulum, a collection of parallel, membrane-bound cisternae studded with ribosomes on the cytosolic surface of the membranes.[1] Nissl bodies were named after Franz Nissl, a German neuropathologist who invented the staining method bearing his name (Nissl staining).[2][3] The term "Nissl bodies" generally refers to discrete clumps of rough endoplasmic reticulum and free ribosomes in nerve cells. Masses of rough endoplasmic reticulum also occur in some non-neuronal cells, where they are referred to as ergastoplasm, basophilic bodies,[1] or chromophilic substance.[4] While these organelles differ in some ways from Nissl bodies in neurons,[5] large amounts of rough endoplasmic reticulum are generally linked to the copious production of proteins.[1]