CD274 and neoplasm: We analyzed tumor-infiltrating DCs and found that MHC-II+ DCs from mice treated with RNA-OG/pOVA-K10high displayed elevated levels of PD-L1 compared to those treated with RNA-OG-pOVA, suggesting that these DCs may be more adept at suppressing T cells via the PD-L1/PD-1 axis (Figure 4D).