Nature Reviews Immunology 10, 479–489, (2010), doi:10.1038/nri2800; published online 18 June 2010; corrected online 25 June 2010

In the version of the article initially published, the table in BOX 1 incorrectly listed IL-17RB as the receptor for IL-17E (also known as IL-25). The correct receptor should have been IL-17RA–IL-17RB.