title: Reply.
authors.affiliation: La Jolla Institute for Allergy and Immunology, La Jolla, Calif.
authors.forename: Luise
authors.initials: L
authors.lastname: Westernberg
authors.affiliation: La Jolla Institute for Allergy and Immunology, La Jolla, Calif.
authors.forename: Veronique
authors.initials: V
authors.lastname: Schulten
authors.affiliation: La Jolla Institute for Allergy and Immunology, La Jolla, Calif.
authors.forename: Alessandro
authors.initials: A
authors.lastname: Sette
authors.affiliation: La Jolla Institute for Allergy and Immunology, La Jolla, Calif. Electronic address: bpeters@lji.org.
authors.forename: Bjoern
authors.initials: B
authors.lastname: Peters