Yu, Y., Sun, R., Hu, F., Ding, Z., Li, X., Han, J., Liang, L., Wang, T., Xi, G., Dong, X., Li, Y., Zhao, X., Zhang, D.

Background
A hypoxic microenvironment is the most frequent characteristic in tumor microenvironment. Programmed death-ligand 1 (PD-L1) is an important molecule and therapeutic target that mediates the immune response of tumor cells. Previous studies h…