Correction to: Nature https://doi.org/10.1038/s41586-019-1425-7Published online 24 July 2019

In Fig. 3f of this Letter, owing to an error during the production process, the y-axis label of the top graph was inadvertently shown as ‘YFP fluorescence (AU)’ instead of ‘RFP fluorescence (AU)’. This error has been corrected online.