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. 2021 May 17;11:679928. doi: 10.3389/fonc.2021.679928

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Copyright © 2021 Jiang, Zhang, Chen, He, Liu, Han, Shi, Yang, Mu, Fu and Gao

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.

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(A) Immunofluorescence staining confirmation for the appearance of PD-1-positive TAMs. (B) mRNA expression of CD68 showed a correlation with PD-1 expression in the TCGA cohort. (C) mRNA expression of CD68 showed a correlation with PD-L1 expression in the TCGA cohort.