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Human Health And Disease

Question
CBSEENBI12000554

How T-cells respond to antigens?

Solution

T-cells respond to antigens by producing a clone of T-cells. Each T-cell recognizes a specific antigen. Therefore, the body contains separate T-cells for every antigen that the body encounters.
1. The Killer T-cells directly attack and destroy antigens. They do so by moving to the site of invasion and producing chemicals that attract phagocytes and stimulate them to feed more aggressively on antigens. They also produce substances which attract other T-cells.
2. Helper T-cells act to stimulate antibody production by B-cells.
3. Suppressor T-cells suppress the total immune reaction keeping it from attacking the body’s own cells.
4. Memory T-cells have the ability to produce more effector cells.