[1] Vrije Univ Amsterdam, Univ Med Ctr, Dept Mol Cell Biol & Immunol, NL-1007 MB Amsterdam, Netherlands
[2] Univ Med Ctr Freiburg, Allergy Res Grp, Dept Dermatol, Freiburg, Germany
[3] Helmholtz Ctr Infect Res, Braunschweig, Germany
[4] Hannover Med Sch, Inst Immunol, D-3000 Hannover, Germany