Cells that break up invading particles or cells and then display parts of them – antigens – for other immune cells to inspect. APCs include the macrophages, dendritic cells and B cells.

Heterogeneous group of immunocompetent cells that mediates the cellular immune response by processing and presenting antigens to the T-cell receptor. Traditional antigen-presenting cells include MACRO [..]

leukocytes (white blood cells) that cut, process, and attach antigens to their cell membranes (for inspection by helper T cells); not pathogen-specific

  Antigen presenting cells (APCs) are immunocompetent cells (including macrophages, dendritic cells, and B- lymphocytes, among others) that display acquired foreign components known as antigens on their surface. APCs are in turn recognized by T and B lymphocytes which initiate the elimination and/or neutralization of the infectious agent. Different [..]

Cells that collect foreign material and digests it into pieces that can be recognized by the immune system (helper T-cells). APC's are B cells, macrophages, or dendritic cells.