Interleukin-2 (IL-2)

Interleukin-2 (IL-2) is a protein in the immune system that plays a crucial role in the body's defense against infections and diseases, particularly in regulating the growth and activity of immune cells called T cells. When the body detects an infection, IL-2 is produced by certain immune cells, boosting the activity and proliferation of T cells, which help to attack pathogens and cancer cells. IL-2 is also used therapeutically in certain cancer treatments and autoimmune diseases to enhance immune responses. Its importance lies in its ability to help the body maintain a balanced and effective immune response.