where is nissl body
Nissl body topic. Motor nerve cell from ventral horn of medulla spinalis of rabbit. The angular and spindle-shaped Nissl bodies are well shown. A Nissl body , also known as Nissl substance , is a large granular body found in neurons . These granules are of rough endoplasmic reticulum (RER) with rosettes of free ribosomes , and are the site of protein synthesis.