title: Reply.
authors: Division of Immunology, Boston Children's Hospital, Boston, Mass. Electronic address: Francisco.Bonilla@childrens.harvard.edu.
authors: Francisco A
authors: FA
authors: Bonilla
authors: Division of Immunology, Boston Children's Hospital, Boston, Mass.
authors: Helen
authors: H
authors: Chapel
authors: Division of Immunology, Boston Children's Hospital, Boston, Mass.
authors: Beatriz T
authors: BT
authors: Costa-Carvalho
authors: Division of Immunology, Boston Children's Hospital, Boston, Mass.
authors: Charlotte
authors: C
authors: Cunningham-Rundles
authors: Division of Immunology, Boston Children's Hospital, Boston, Mass.
authors: M Teresa
authors: MT
authors: de la Morena
authors: Division of Immunology, Boston Children's Hospital, Boston, Mass.
authors: Francisco J
authors: FJ
authors: Espinosa-Rosales
authors: Division of Immunology, Boston Children's Hospital, Boston, Mass.
authors: Lennart
authors: L
authors: Hammarström
authors: Division of Immunology, Boston Children's Hospital, Boston, Mass.
authors: Shigeaki
authors: S
authors: Nonoyama
authors: Division of Immunology, Boston Children's Hospital, Boston, Mass.
authors: Isabella
authors: I
authors: Quinti
authors: Division of Immunology, Boston Children's Hospital, Boston, Mass.
authors: John M
authors: JM
authors: Routes
authors: Division of Immunology, Boston Children's Hospital, Boston, Mass.
authors: Mimi L K
authors: ML
authors: Tang
authors: Division of Immunology, Boston Children's Hospital, Boston, Mass.
authors: Klaus
authors: K
authors: Warnatz