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. 2020 Jul 17;12:5893–5902. doi: 10.2147/CMAR.S257299

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© 2020 Cui et al.

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PD-L1 expression in adjacent normal mucosal tissues and HSCC tissues. Representative immunohistochemical staining examples of PD-L1 protein expression are shown. In the current study there was no positive expression of PD-L1 in the mucosal tissues. Magnification, ×100 and ×200.

Abbreviations: PD-L1, programmed death-ligand 1; HSCC, hypopharyngeal squamous cell carcinoma.