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. 2022 May 13;13:894865. doi: 10.3389/fgene.2022.894865

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Copyright © 2022 Zhu, Feng, Song, Wang and Chen.

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 characteristics of the four clusters in the CGGA-2 dataset. (A) Heat map of the four immune clusters based on ssGSEA scores. (B) Stromal scores, (C) immune scores, and (D) tumor purity of different clusters. (E–J) Violin plots for the immune checkpoint gene expressions of PDCD1, CD274, PDCD1LG2, CTLA-4, LAG3, and HAVCR2 in different clusters.