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. 2021 Oct 1;12:736030. doi: 10.3389/fimmu.2021.736030

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Copyright © 2021 Qiu, Guo, Yao, Chen and Lin

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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Immune checkpoint gene expression levels in high- and low-risk groups. The expression levels of CD274 (A), CTLA4 (B), LAG3 (C), and TIM3 (D) in each group in TCGA cohort (p < 0.001). The expression levels of CD274 (E), CTLA4 (F), LAG3 (G), and TIM3 (H) in each group in GEO cohort (p < 0.001).