Correction to: Nature Reviews Immunology https://doi.org/10.1038/s41577-024-01026-4, published online 22 April 2024

In the version of the article initially published, in the “Lactate” section, “SLC16A4” has been corrected to “SLC16A3” in the text now reading “…MCT4 (also known as SLC16A3)”. This has been amended in the HTML and PDF versions of the article.