CD274 and neoplasm: The results showed that after the BNT162b2 treatments, there was not only a significantly increased percentage of intratumoral PD-L1+ neutrophils in total live cells in the tumor (Fig. 5f), but also a significantly increased percentage of intratumoral PD-L1+ neutrophils in total neutrophils in the tumor (Fig. 5g) when compared to the PBS control group.