Which type of T cell is responsible for controlling and terminating an immune response?

The T regulator, also known as T suppressor cells, plays a crucial role in controlling and terminating immune responses. These cells help maintain homeostasis within the immune system by ensuring that it does not overreact and cause damage to the host's own tissues. They achieve this by releasing inhibitory cytokines and directly interacting with other immune cells to downregulate their activity.

The function of T regulator cells is vital in preventing autoimmune diseases, where the immune system mistakenly attacks the body’s own cells. By dampening the immune response once an infection has been cleared, these cells also prevent excessive inflammation and maintain the balance needed for a healthy immune function. The presence of T regulator cells ensures that the immune response is appropriately modulated, providing a check on the action of other cells that may be more aggressively targeting pathogens.