mononuclear phagocyte system n.
Abbr. MPS A widely distributed collection of both free and fixed macrophages derived from bone marrow precursor cells by way of monocytes; their substantial phagocytic activity is mediated by immunoglobulin and by the serum complement system.
|mononuclear phagocyte system|
|a widely distributed system of free and fixed macrophages derived from bone marrow|