J Xue, C Chen, M Qi, Y Huang, L Wang, Y Gao… - Oncotarget, 2017 - ncbi.nlm.nih.gov
The programmed death-ligand 1 (PD-L1), by binding to PD-1 on the surface of immune cells,
activates a major immune checkpoint pathway. Elevated expression of PD-L1 in tumor cells …