On pages 4430 and 4439 in the 10 May 2012 issue, there are errors in the byline and in Figure 7. The first and second authors (Thomas Duhen and Rebekka Duhen) are also affiliated with the Department of Immunology, University of Washington School of Medicine, Seattle, WA, which should have been denoted by their names in the byline with a superscripted 2. As a result of this change, the affiliations for all authors will read as shown.

Thomas Duhen,1,2 Rebekka Duhen,1,2 Antonio Lanzavecchia,3 Federica Sallusto,3 and Daniel J. Campbell1,2

1Benaroya Research Institute, Seattle, WA; 2Department of Immunology, University of Washington School of Medicine, Seattle, WA; and 3Institute for Research in Biomedicine, Bellinzona, Switzerland

In Figure 7B, the bottom panels are mislabeled. Instead of reading “Th17”and “Th17-like,” the labels should have read “Th1” and “Th1-like.” The errors have been corrected in the online version, which now differs from the print version.