lymphocyte trafficking

Lymphocyte trafficking is the process by which immune cells, particularly lymphocytes (a type of white blood cell), move through the bloodstream and tissues to surveillance sites. They travel from the blood to lymph nodes or targeted tissues, guided by chemical signals like chemokines and interactions with blood vessel walls. This movement allows lymphocytes to detect and respond to infections or injuries efficiently. Once they reach their destination, they can stay to fight pathogens or return to circulation. This dynamic circulation is vital for a quick and effective immune response.