MR1 and neoplasm: We therefore assessed B16F10 tumor metastasis in B6-MAITcast MR1 WT and B6-MAITcast MR1−/− mice in the context of NK cell depletion using anti-asialo GM-1 (αASGM1), after confirming that αASGM1 did not deplete MAIT cells (Supplementary Fig. 1e).