<prompt> Equivalent to macrophages are ?KeratinocytesHistiocytesMast cellsMicrophages  <response>: Ans. is b i.e., Histiocytes MonocyteMacrophages Mononuclear phagocytes MP also known as macrophages or histiocytes are distributed throughout viual all tissues. The macrophage is the dominant cellular player in chronic inflammation. MP arise from monoblast in the marrow, and they are released into the circulation as monocytes. The monocytes then migrate to tissues and become pa of the tissue fixed macrophages. 