Correction to: Nature https://doi.org/10.1038/s41586-018-0812-9, published online 31 December 2018.
In this Letter, panel j was inadvertently labelled as panel k in the caption to Fig. 4. Similarly, ‘Fig. 4k’ should have been ‘Fig. 4j’ in the sentence beginning ‘TNF-α-deficient gBT-I cells were…’. In addition, the surname of author Umaimainthan Palendira was misspelled ‘Palendria’. The original Letter has been corrected online.