ANATOMY

Detailed explanation-1: -T lymphocytes attach onto infected cells and release proteins. These proteins diffuse into the infected cells. This causes production of self-destructive enzymes, which cause cell death. The remains of the cell are then removed by phagocytosis .

Detailed explanation-2: -Your lymphocytes include T-cells and B-cells. Both types are part of your body’s defense. B-cells make proteins called antibodies to fight pathogens. T-cells protect you by destroying harmful pathogens and by sending signals that help control your immune system’s response to threats.

Detailed explanation-3: -Cytotoxic T cells kill their targets by programming them to undergo apoptosis (Fig. 8.35).

Detailed explanation-4: -A type of immune cell that can kill certain cells, including foreign cells, cancer cells, and cells infected with a virus. Cytotoxic T cells can be separated from other blood cells, grown in the laboratory, and then given to a patient to kill cancer cells.