<prompt> Scavenger cell in the CNS is:AstrocytesMicrogliaOligodendrocyteSchwann cell  <response>: Microglia is the only cell that is borne out of CNS and moves into the CNS. It is formed from monocyte lineage in the bone marrow. It is physiologically and embryologically unrelated to other neural cell types It has phagocytic function hence known as scavenger cell in the CNS. 