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The phagocytes move by a method called chemotaxis. When phagocytes come into contact with bacteria, the receptors on the phagocyte's surface will bind to them. This binding will lead to the engulfing of the bacteria by the phagocyte. [11] Some phagocytes kill the ingested pathogen with oxidants and nitric oxide. [12]
A cell that performs phagocytosis is called a phagocyte. The engulfing of a pathogen by a phagocyte. In a multicellular organism's immune system, phagocytosis is a major mechanism used to remove pathogens and cell debris. The ingested material is then digested in the phagosome.
The second group is the non-phagocytic types that are distributed near regenerative fibers. These peak between two and four days and remain elevated for several days while muscle tissue is rebuilding. [60] The first subpopulation has no direct benefit to repairing muscle, while the second non-phagocytic group does.
The mononuclear phagocyte system and the monocyte macrophage system refer to two different entities, often mistakenly understood as one. [citation needed] "Reticuloendothelial system" is an older term for the mononuclear phagocyte system, but it is used less commonly now, as it is understood that most endothelial cells are not macrophages. [2]
Scanning electron micrograph of a phagocyte (yellow, right) phagocytosing anthrax bacilli (orange, left). The history of phagocytosis is an account of the discoveries of cells, known as phagocytes, that are capable of eating other cells or particles, and how that eventually established the science of immunology.
In hematology, hemophagocytic lymphohistiocytosis (HLH), also known as haemophagocytic lymphohistiocytosis (British spelling), and hemophagocytic or haemophagocytic syndrome, [1] is an uncommon hematologic disorder seen more often in children than in adults.
In immunology, an Fc receptor is a protein found on the surface of certain cells – including, among others, B lymphocytes, follicular dendritic cells, natural killer cells, macrophages, neutrophils, eosinophils, basophils, human platelets, and mast cells – that contribute to the protective functions of the immune system.
The mononuclear phagocytic system is part of the organism's immune system. The histiocyte is a tissue macrophage [ 1 ] or a dendritic cell [ 2 ] ( histio , diminutive of histo , meaning tissue , and cyte , meaning cell ).