This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous System, Subject name: Physiology
In brain, Which cells convert glutamate to glutamine 
Select and explain. 
A. Oligodendrocytes, B. Astrocytes, C. Ependymal cells, D. Microglia
B: Astrocytes
Answer: B: Astrocytes 
Explanation: Ans. (b) Astrocytes(Ref: Ganong, 25th ed/p.85)Astrocytes take up the glutamate and convert it to glutamine with the help of an enzyme glutamine synthase