Correction to: Nature Reviews Methods Primers https://doi.org/10.1038/s43586-023-00284-1, published online 25 January 2024.

In the version of the article initially published, there were errors in Figs. 1–4. In Fig. 1, in the upper box, “CDR3” initially appeared as “CDR2” and “IGLJ(10)” read “IGLV(10)”. In the lower box, “TRBD” was missing from above “CDR3”. In Fig. 2a, “class-switch recombination” originally read “class switching”. In Fig. 3d, the uppermost arrow, “ + /– UMI” and the lower “MTPX PCR” were all missing, and the second instance of “ + /– UMI” appeared as “UMI”. In Fig. 4c, the AIRR 1 image was missing the TCR from the surface of one of the cells. The figures have now been amended in the HTML and PDF versions of the article.