A dendritic cell is a specific type of cell in the immune system. Dendritic cell’s primary function to teach the immune system to recognize specific “markers” called “antigens” that are found on living or non-living entities to be targeted by the immune system. They do this by capturing the antigens from invading entities, processing the antigens and then “presenting” the antigens on their surface to other cells in the immune system. Thus dendritic cells are sometimes called “antigen-presenting cells (APC). Dendritic cells can be grown from stem cells and engineered to display a specific antigens associated with cancer, thus dendritic cells may important in fighting cancer.