A cell that can "present" antigen in a form that T cells can recognize it. The cells that can "present" antigen include B cells and cells of the monocyte lineage (including macrophages).

A type of immune cell that boosts immune responses by showing antigens on its surface to other cells of the immune system. An antigen-presenting cell is a type of phagocyte. Also called APC.

Specialized white blood cells that detect harmful substances in the body and then signal other immune system defenders (known as T-cells) to mount a defense.

A heterogeneous group of immunocompetent Cells that mediate the Cellular immune response by processing and presenting Antigens to the T-Cells. Traditional Antigen-presenting Cells include Macrophages; [..]

A type of immune cell that enables a T lymphocyte (T cell) to recognize an antigen and mount an immune response against the antigen. Antigen-presenting cells (APCs) include macrophages, dendritic cells, and B lymphocytes (B cells). See Related Term(s): Antigen, Immune Response, T Lymphocyte

Any substance that causes the body to make a specific immune response.

A white blood cell that recognizes antigens, binds to them, ingests them, breaks them down, and then presents pieces of them to T cells.

<immunology> 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 [..]