<prompt> Which of the following type of cells give rise to macrophages?NeutrophilsMonocytesLymphocytesReticulo endothelial cells.  <response>: Monocytes formed in the bone marrow are precursors of tissue macrophages. After an intravascular stay of 3 days, monocytes migrate from the blood into tissues. In the tissues, monocytes undergo differentiation into macrophages. 