Correction to: Nature Cell Biology https://doi.org/10.1038/s41556-019-0346-x, published online 1 July 2019.

In the version of the article initially published, in Fig. 1b, the week 5 Polyclonal panel was a duplicate of week 6 in the same row. The original files were located, and the authors realised that in the Polyclonal row, the panels labelled weeks 3–5 should have been labelled weeks 4–6 and that the week 3 image was missing. This has now been corrected, and the amended Fig. 1b is shown below as Fig. 1.

Fig. 1
figure 1

Revised Fig. 1b.

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