This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
[{'content': 'True about Nissl granulea) Involves in RNA synthesisb) Present in axonc) Present in dendrited) Involves in protein synthesise) Structurally they are endoplasmic reticulum \nSelect and explain. \nA. abd, B. cde, C. bde, D. ade', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Nissl granules are rough endoplasmic reticulum found in dendrites, but absent in axon or axon hillock. They help in protein synthesis.', 'role': 'assistant'}]