title: Response to 'Class II essential for CD4 survival'
authors.affiliation: Lymphocyte Biology Section, Laboratory of Immunology, Building 10 Room 11N311, National Institutes of Health, Bethesda, MD 20892-1892, USA. ronald_germain@nih.gov
authors.forename: Jeffrey R.
authors.initials: JR
authors.lastname: Dorfman
authors.forename: Irena
authors.lastname: Stefanová
authors.forename: Koji
authors.initials: K
authors.lastname: Yasutomo
authors.forename: Ronald N.
authors.initials: RN
authors.lastname: Germain