PD-L1 protein expression in non-small cell lung cancer based on different immunohistochemical antibodies

Minghui Zhang, Di Feng, Jing Jing, Hang Liu, Shu Zhao, Qingyuan Zhang


Abnormal immune checkpoint activation leads to the immune escape of tumour cells, and one of the most important immune checkpoints is programmed cell death ligand 1 (PD-L1) (1).