In autumn 2002, the Ernst Schering Research Foundation Workshop sponsored the 45th in its series of conferences devoted to emerging areas in basic and applied biomedical research. These conferences bring together a critical mass of top scientists working in an impor- tant area in an intimate setting that fosters the free exchange of knowledge and ideas. In this spirit, Workshop 45 assembled leaders in the field of chemokines - hemotactic cytokines that coordinate leukocyte trafficking - amid the scenic vineyards and wineries of Napa Valley, to discuss the latest concepts of how these...