Medical Definition of Antigen-presenting cell
1.
An immunocompetent cell that mediates the cellular immune response by presenting antigens or mitogens bound to MHC Class I or Class II molecules, which stimulate T-cell activation.
Includes macrophages, endothelial cells, dendritic cells and Langerhans cells in the skin.
See: MHC restriction, histocompatibility antigens.
(18 Nov 2007)
Lexicographical Neighbors of Antigen-presenting Cell
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