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. 2021 Mar 20;13(6):1424. doi: 10.3390/cancers13061424

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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(A,B). Examples of immune cell (IC) and tumor cell (TC) programmed cell death-ligand 1 (PD-L1) staining in urothelial carcinoma (UC) using the VENTANA PD-L1 (SP263) Assay (Images provided by Marietta Scott, Precision Medicine & Biosamples, AstraZeneca).