T cell tolerance

T cell tolerance is the immune system's way of preventing T cells from attacking the body's own cells. During development, T cells learn to distinguish between harmful invaders and the body's own tissues. If a T cell recognizes the body's own proteins too strongly, it is either disabled or eliminated through processes called anergy or deletion. This prevents autoimmune diseases, where the immune system attacks healthy tissues. Tolerance ensures that the immune response targets infections and harmful substances without mistakenly harming the body's own cells, maintaining immune system balance and self-control.