This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
The protein synthesis site of the cell body of neurons 
Select and explain. 
A. Nissl bodies, B. Dendrites, C. Axon, D. All
A: Nissl bodies
Answer: A: Nissl bodies 
Explanation: The nissl bodies are the protein synthesis site in a neuron They are equivalent to rough endoplasmic reticulum Ref:Guyton and Hall textbook of medical physiology 12th edition ,page number 676