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Nature Immunology 9, 949–952 (1 September 2008) | doi:10.1038/ni.f.214

Chemokines and leukocyte traffic

Federica Sallusto & Marco Baggiolini

Twenty years after the discovery of chemokines is an appropriate time to review leukocyte traffic and to assess the knowledge and opportunities that have arisen from countless studies of the large and tight-knit family of chemotactic proteins.