1 Translational Immunology Unit, Department of Medicine, Solna, Karolinska Institutet and University Hospital, SE-176 76 Stockholm, Sweden. Electronic address: Susanne.Gabrielsson@ki.se.
2 Translational Immunology Unit, Department of Medicine, Solna, Karolinska Institutet and University Hospital, SE-176 76 Stockholm, Sweden. Electronic address: Annika.Scheynius@ki.se.