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The professional phagocytes include many types of white blood cells (such as neutrophils, monocytes, macrophages, mast cells, and dendritic cells). [8] The main difference between professional and non-professional phagocytes is that the professional phagocytes have molecules called receptors on their surfaces that can detect harmful objects ...
A dendritic cell (DC) is an antigen-presenting cell (also known as an accessory cell) of the mammalian immune system.A DC's main function is to process antigen material and present it on the cell surface to the T cells of the immune system.
Dendritic cells are named after their structure that resembles that of a dendrite of an axon, and they have two vital functions: display antigens, which are recognized by T cells and alert lymphocytes of the presence of an injury or infection. When the body is introduced to infection or injury, dendritic cells migrate to immune or lymphoid ...
Phagocytosis (from Ancient Greek φαγεῖν (phagein) 'to eat' and κύτος (kytos) 'cell') is the process by which a cell uses its plasma membrane to engulf a large particle (≥ 0.5 μm), giving rise to an internal compartment called the phagosome. It is one type of endocytosis. A cell that performs phagocytosis is called a phagocyte.
In general, phagocytes patrol the body searching for pathogens, but are also able to react to a group of highly specialized molecular signals produced by other cells, called cytokines. The phagocytic cells of the immune system include macrophages, neutrophils, and dendritic cells.
Dendritic cells are phagocytes in tissues that are in contact with the external environment; therefore, they are located mainly in the skin, nose, lungs, stomach, and intestines. [37] They are named for their resemblance to neuronal dendrites , as both have many spine-like projections.
A histiocyte is a vertebrate cell that is part of the mononuclear phagocyte system ... The histiocyte is a tissue macrophage [1] or a dendritic cell [2] (histio, ...
Cellular immunity, also known as cell-mediated immunity, is an immune response that does not rely on the production of antibodies. Rather, cell-mediated immunity is the activation of phagocytes, antigen-specific cytotoxic T-lymphocytes, and the release of various cytokines in response to an antigen.