has disposition at some time actively participates in macrophage A mononuclear phagocyte present in variety of tissues, typically differentiated from monocytes, capable of phagocytosing a variety of extracellular particulate material, including immune complexes, microorganisms, and dead cells. BTO:0000801 CALOHA:TS-0587 FMA:63261 FMA:83585 Morphology: Diameter 30_M-80 _M, abundant cytoplasm, low N/C ratio, eccentric nucleus. Irregular shape with pseudopods, highly adhesive. Contain vacuoles and phagosomes, may contain azurophilic granules; markers: Mouse & Human: CD68, in most cases CD11b. Mouse: in most cases F4/80+; role or process: immune, antigen presentation, & tissue remodelling; lineage: hematopoietic, myeloid. cell histiocyte animal cell macrophage-smooth Brucella interaction macrophage-rough Brucella interaction disposition to host programmed cell death induced by Brucella infection Brucella resistance to host PCD