Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2021 Sep 8;11:647512. doi: 10.3389/fonc.2021.647512

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

Copyright © 2021 Liang, Liu, Huang, Liu, Guo, Li, Wang, Li, Lin, Wang, Ding, Mao and Li

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

PMC Copyright notice

PD-L1 IHC staining for B2 and B3 samples in the cluster C4. Top, hematoxylin and eosin (H&E) staining of the tissues. Bottom, IHC staining of PD-L1 in the cells using antibody 22C3 (Dako). Brown cells are PD-L1 staining cells. The H&E staining was used to estimate the tumor cell percentage (TCP). The expression level of PD-L1 protein is determined by the tumor proportion score (TPS), which is further divided into three types: ‘High expression’ (TPS ≥ 50%), ‘Positive’ (1% ≤ TPS < 50%) and ‘Negative’ (TPS < 1%).