The event of providing fragments of foreign proteins including viruses and bacteria to the helper T cells. The presentation occurs through the display of the fragments of foreign proteins on the surface of the antigen presenting cells (APC).
A process wherein certain immune cells (i.e., macrophages and dendritic cells) attack an antigen, capture a portion of it, and present it to T cells, which then aggressively seek out and destroy those specific antigens.
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.