PTPRC and neoplasm: Moreover, we analyzed the frequency of tumor-infiltrating DCs (CD45+F4/80–CD11c+MHC-II+) expressing MHC-I–SIINFEKL and determined that IR treatment resulted in a significant increase in the level of MHC-I–SIINFEKL complexes in DCs from Ythdf1-cKO+IR mice compared with WT+IR mice (P < 0.01, Figure 2B).