Vol. 215, No. 1, January 2018. https://doi.org/10.1084/jem.20170457
The authors regret that the original version of Fig. 1 (A and C) was published with errors. In A, the percentage of cells in the top right gate of the day 8 FACS plot was corrected to 29.7. In C, the representative numbers for the bottom right Tfh cell gates (IL-21+IFN-γ- population) of the FACS plots were inadvertently duplicated from the bottom right Th1 cell gates directly above. These errors do not alter the findings in the published manuscript, as the correct data were used in all calculations and are displayed in the graphs in each figure. The corrected Fig. 1 and corresponding legend appear below.
The online HTML and PDF versions of this paper have been corrected. The error remains only in the print version.