This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Medicine
Which of the following is associated with ependymal cells rather than microglial cells? 
Select and explain. 
A. Blepharoplasts, B. Rod cells, C. Gitter cells, D. Reservoir for HIV
A: Blepharoplasts
Answer: A: Blepharoplasts 
Explanation: Ependymal cells line the cerebral ventricles and have blepharoplasty that are visible with special stains. They are useful histologic markers that document the ependymal origin of a brain tumor. Microglial cells are derived from macrophages and are the phagocytic cells of the central nervous system. When activated, microglial cells are called gitter cells and have a foamy appearance. Neuronophagia (e.g., viral encephalitis, poliomyelitis) occurs when microglial cells phagocytize breakdown products of the neuron. Rod-like microglial cells are seen in neurosyphilis. Macrophages are primarily responsible for carrying HIV into the central nervous system and are the reservoir cell for the virus. ref - pubmed.com