Correction to: Nature Nanotechnology https://doi.org/10.1038/s41565-019-0381-6, published online 25 February 2019.

The Supplementary Information originally published with this Article was an older version, in which ‘IFN-γ’ was misspelled ‘INF-γ’ in Supplementary Fig. 9 and the β-Actin blot in Supplementary Fig. 13 was the wrong image. The Supplementary Information has now been replaced.