During phagocytosis , monocytes, neutrophils and macrophages generate Superoxide radicals, hydrogen peroxide and the highly reactive hydroxyl radicals3.
Fc receptors mediate various effects on immune cells, including proliferation of B cells and phagocytosis by phagocytes.
In addition, these ligands markedly upregulated production of CD36, a scavenger receptor that regulates phagocytosis of apoptotic neutrophils.
Destruction of the red cells occurs as a result of the red cell-bound autoantibodies to the Fc receptors on monocytes and macrophages; phagocytosis and cytotoxic lysis of the red cells subsequently occur.
Weakened resistance to infection is caused by decreased antibody and complement production, leukocyte phagocytosis and intracellular killing, and macrophage phagocytosis .
Faint, brown, moniliform fungal elements were found in the granuloma, some of which were phagocytized by giant cells.
However, eventually cells break into fragments, forming apoptotic bodies that are phagocytosed by macrophages or neighboring reticuloendothelial cells.
The endothelium of the blood vessels phagocytizes carbon particles, whereas other cells are supposed to remain free of carbon.
The nodes contain macrophages, phagocytic cells that engulf ( phagocytize ) and destroy bacteria, dead tissue, and other foreign matter, removing them from the bloodstream.
The dying cell is finally phagocytosed by scavenger cells.