Correction to: Nature Immunology https://doi.org/10.1038/s41590-020-0777-3, published online 14 September 2020.

In the version of this article initially published, in the Methods, details were omitted from the sections “In vitro ILC2–Treg cell co-cultures” and “In vitro ILC2–GDF15 co-cultures.” In “In vitro ILC2–Treg cell co-cultures,” the cat. no. for the GDF15-blocking peptide was omitted and the concentration was incorrect. The cat. no. is MBS9229417 and the concentration was 10 μg ml–1. Additional details about the GDF15-blocking peptide omitted from this section are as follows: “The peptide was separately validated to inhibit the in vitro activation of ILC2s by E. coli–derived recombinant GDF15 (R&D Systems, cat. no. 8944-GD), as measured by the inhibition of GDF15-induced IL-13 expression (data not shown). Seventy-two hours later, the expression of IL-13 in ILC2s was measured by flow cytometric analysis.” The details omitted from the section “In vitro ILC2–GDF15 co-cultures” are as follows: “These cells were incubated with either IL-33 (10 ng ml–1), E. coli–derived recombinant GDF15 (R&D Systems, cat. no. 8944-GD) (10 µg ml–1) or both. Seventy-two hours later, the expression of IL-13 in ILC2 cells was measured by flow cytometry.” The errors have been corrected in the HTML and PDF versions of the article.