Source: Cellular immunity image, Public domain: http://upload.wikimedia.org/wikipedia/commons/6/69/Lymphocyte_activation.png
Genetically programmed death of a cell which can be caused by chemicals that T cells release.
A type of adaptive immunity in which T cells respond to target cells that have invaded body cells.
A type of T cell that works to boost adaptive immune responses.
A type of T cell that works to kill target cells.