Chemokines are small proteins that play a crucial role in the immune system. They act like signals, guiding immune cells to areas of infection or inflammation in the body. By attracting these cells, chemokines help the body respond effectively to threats, such as bacteria or viruses. These proteins are produced by various cells, including macrophages and lymphocytes, and they bind to specific receptors on immune cells. This interaction helps direct the movement of these cells, ensuring they reach the right location to fight off infections or heal injuries. Overall, chemokines are essential for maintaining a healthy immune response.