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. 2021 Jan 19;21:58. doi: 10.1186/s12935-021-01766-6

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© The Author(s) 2021

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

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Fig. 1 — IRF4 was down-regulated in colon cancer tissues. Colon cancer tissue and paracancerous colon tissue specimens were collected from colon cancer patients. QRT-PCR (a) and WB (b) were performed to assess the gene and protein expression of IRF4 in colon cancer tissues and paracancerous colon tissues. c Immunohistochemistry was performed to detect the proportions of Tregs and macrophages in colon cancer tissues and paracancerous colon tissues. (**P < 0.01, versus Normal adjacent tissues)