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. 2017 Aug 14;8(50):87234–87243. doi: 10.18632/oncotarget.20254

Figure 1. Programmed death-ligand 1 (PD-L1) expression levels in paired surgically resected primary and metastatic tissues with representative PD-L1 immunohistochemistry images.

Figure 1

Most cases showed concordance of PD-L1 immunohistochemical (IHC) staining between primary and metastatic sites.