Chemokines are major mediators of immune cells and are involved in a wide range of proinflammatory human diseases, including rheumatoid arthritis, multiple sclerosis, and organ transplant rejection. It has recently been discovered that their receptors are involved in HIV infection. The characterization of these molecules and their receptors is thus of primary importance in understanding a number of human diseases and infections. This volume and its companion Volume 288 on Chemokine Receptors provide comprehensive experimental protocols used in this field of research....