väiksed tsütokiinide molekulid, mis osalevad rakkude migratsioonis ja aktivatsioonis, kusjuures eriti olulised on nad fagotsüütide ja lümfotsüütide toimimise reguleerimises, Chemokines are a family of small cytokines, or signaling proteins secreted by cells. Their name is derived from their ability to induce directed chemotaxis in nearby responsive cells; they are chemotactic cytokines.