<prompt> Phagocytosis in the CNS is done by:AstrocytesSchwann cellsMicrogliaOligocytes  <response>: Ans. C. MicrogliaThe reticuloendothelial system R.E.S comprises monocyte-derived phagocytic cells that are lymph nodes and several other organs. The reticuloendothelial system comprises monocyte-derived phagocytic cells that are lymph nodes several other organs. 