Correction to: Nature Cell Biology https://doi.org/10.1038/s41556-018-0105-4, published online 25 May 2018.

In the PDF version of this Resource originally published, on the author list the superscript number 9, to indicate Rui Wang was an equally contributing author, was missing owing to a technical error. This has now been amended. In addition, the authors wish to replace Supplementary Table 2, as in the original version Group 1 immune cells were mis-classified into Group 46 immune cells, resulting in three groups of immune cells where there should have been four. Supplementary Table 2 has now been replaced.