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Immunohistochemical staining for PD-L1 in patients with locoregionally advanced NPC.
Notes: (A) A patient whose tumor was considered low expression on immunohistochemical staining with cytomembranic PD-L1. (B) Another patient whose tumor was considered high expression on immunohistochemical staining with cytomembranic PD-L1.
Abbreviations: NPC, nasopharyngeal carcinoma; PD-L1, programmed death-ligand 1.
