Nature Reviews Cancer (2017) https://doi.org/10.1038/nrc.2017.83 Published online 13 October 2017
The article as originally published incorrectly cited reference 31 in the legend for figure 7. The correct reference should have been reference 132 (Angelo, M. et al. Multiplexed ion beam imaging of human breast tumors. Nat. Med. 20, 436–442 (2014)).