Ronald Glasser (1976) describes the final phase of the attack of white blood cells on alien cells:

"Once a killer T lymphocyte couples to the surface of an infected cell, its own internal protein cell-killing machinery turns on. The coupling with the infected cell is the chemical switch that transforms the T cell into a killer cell.

"Chemicals are produced; compounds begin to be made within the lymphocyte that diffuse out of these killer cells like poison gas out of a canister, entering the infected cell, killing the virus, stopping the viral spread, giving our body the chance to regenerate itself."