Correction to: Nature Immunology https://www.nature.com/articles/ni.3437, published online 18 April 2016.

In the version of this article initially published, the labels above the third and fourth groups in Fig. 2b were switched; the far right label (above the fourth, pink group) should be NKT17, and the label just to its left (above the third, green group) should be NKT1. Also, the third gene symbol (Ccn2b) along the right margin of Fig. 3a was incorrect; the correct gene symbol is Ccnb2. Finally, the gene symbols (C1kd and Ccn2b) above the far left plots in Fig. 3b were incorrect; the correct gene symbols are Cdk1 (top left plot) and Ccnb2 (bottom left plot).