1 Institute of Immunology, Christian-Albrechts University of Kiel and University Hospital Schleswig-Holstein Campus Kiel, D-24105, Kiel, Germany. dietrich.kabelitz@uksh.de.
2 Institute of Immunology, Christian-Albrechts University of Kiel and University Hospital Schleswig-Holstein Campus Kiel, D-24105, Kiel, Germany.
3 Faculty of Medicine, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada.