Question

Explain the mechanism of action of T cells to antigens.

Answer 1

The T-cells are a type of lymphocytes. These are called as the immune cells which helps in providing immunity against the foreign particles. T-cells respond to antigens by recognising the specific antigen and by producing a clone of T-cells. Therefore, the body contains separate T-cells for every antigen that it encounters. When a specific antigen enters the tissues, the T-lymphocytes which are programmed to recognise that particular antigen and then activate or stimulate the other cells to perform the respective activities. The killer T-cells 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. Helper T-cells stimulate antibody production by B-cells. Supressor T-cells suppress the total immune reaction keeping it or to prevent it from attacking the body's own cells. Memory T-cells have the ability to produce more effector cells and they remember antigen for future encounters.