[1] Univ Wurzburg, Sch Med, Dept Dermatol, D-97080 Wurzburg, Germany
[2] Univ Wurzburg, Sch Med, Inst Pathol, D-97080 Wurzburg, Germany
[3] German Canc Res Ctr, Tumor Immunol Programme, Div Apoptosis Regulat, D-69120 Heidelberg, Germany
[4] Univ Ulm, Dept Physiol Chem, D-89081 Ulm, Germany