Diana Del Castillo

Correction to: Nature https://doi.org/10.1038/s41586-023-06512-8 Published online 6 September 2023 After publication of this article, we noted that the IgM–/– mouse strain used in experiments reported in Fig. 4j and Extended data Fig. 7l was incorrectly referenced in the Methods. The IgM–/– mouse strain purchased from The Jackson Laboratory and used in our study was 002288 (i.e., IgM–/– mice lacking mature B cells), and not 003751 as mistakenly published in the original version of the article.

Abstract Development of immunocompetent T cells in the thymus is required for effective defence against all types of pathogens, including viruses, bacteria and fungi.