This movie, based on actual molecular structures, follows the molecular interactions that occur when a diseased cell is recognized by a killer T cell. Killer T cells are specialized cells of the immune system that can trigger the death of an infected or diseased cell. One mechanism by which killer T cells cause target cell death is by activating âdeathâ receptors, in this case Fas, on the surface of the target cell. <i>Credit: Drew Barry, The Walter and Eliza Hall Institute of Medical Research.</i>
