antigen-presenting cells
Antigen-presenting cells (APCs) are cells that take in protein antigens, process them, and present antigen fragments to B-cells and T-cells in conjunction with class II MHC molecules so that the cells are activated. Macrophages, B-cells, dendritic cells, and Langerhans cells may act as APCs.

Microbiology. . 2009.

Look at other dictionaries:

  • antigen-presenting cells — cells that take part in antigen presentation (see under presentation); a group of dendritic cells that arise in the bone marrow and migrate to other body sites. They process antigens and put them on their surfaces to react with lymphocytes and… …   Medical dictionary

  • Antigen-presenting cell — An antigen presenting cell (APC) or accessory cell is a cell that displays foreign antigen complexed with MHC on its surface. T cells may recognize this complex using their T cell receptor (TCR). Types APCs fall into two categories: professional… …   Wikipedia

  • Antigen-presenting cell vaccine — An antigen presenting cell vaccine is a vaccine made of antigens and antigen presenting cells (APCs). Also called APC vaccine. External links * [http://www.cancer.gov/Templates/db alpha.aspx?CdrID=44915 Antigen presenting cell vaccine] entry in… …   Wikipedia

  • antigen-presenting cell vaccine — A vaccine made of antigens and antigen presenting cells (APCs). Also called APC vaccine …   English dictionary of cancer terms

  • antigen-presenting cell — n any of various cells (as a macrophage or a B cell) that take up and process an antigen into a form that when displayed at the cell surface in combination with a molecule of the major histocompatibility complex is recognized by and serves to… …   Medical dictionary

  • antigen presenting cell — A cell that carries on its surface antigen bound to MCH Class I or Class II molecules, and presents the antigen in this context to T cells. Includes macrophages, endothelium, dendritic cells and Langerhans cells of the skin. See also MHC… …   Dictionary of molecular biology

  • antigen-presenting cell — noun Date: 1981 any of various cells (as a macrophage or a B cell) that take up an antigen and process it into a form recognized by and serving to activate a specific helper T cell …   New Collegiate Dictionary

  • antigen-presenting cell — APC. A cell that shows an antigen on its surface to other cells of the immune system. This is an important part of an immune response. Also called APC …   English dictionary of cancer terms

  • antigen-presenting cell — ¦ ̷ ̷  ̷ ̷  ̷ ̷  ̷ ̷ ¦ ̷ ̷  ̷ ̷ noun : any of various cells (as a macrophage or a B cell) that take up and process an antigen into a form that when displayed at the cell surface in combination with a molecule of the major histocompatibility… …   Useful english dictionary

  • Antigen presentation — is a process in the body s immune system by which macrophages, dendritic cells and other cell types capture antigens and then enable their recognition by T cells. NOTOC The basis of adaptive immunity lies in the capacity of immune cells to… …   Wikipedia

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