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|Antigen-presenting cells |Cells which do not have antigen-specific receptors. Instead, they capture and | | |process antigens, present them to T cell receptors.  These cells include | | |macrophages, dentritic cells and B cells. | |B cells |Also known as B cell lymphocytes. | | |  | | |B cells spend their entire early life in the bone marrow.  Upon maturity, their | | |job is to travel throughout the blood and lymph looking for antigens with which | | |they can interlock. | | |  | | |Once a B cell has identified an antigen, it starts replicating itself.  These | | |cloned cells mature into antibody-manufacturing plasma cells. | |Basophils |Similar to mast cells, but distributed throughout the body.  Like mast cells, | | |basophils release histamine upon encountering certain antigens, thereby | | |triggering an allergic reaction. | |Cytotoxic T cells |Also called cytotoxic T lymphocytes or CTLs. | | |  | |Dendritic cells |Mostly found in the skin and mucosal epithelium, where...
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