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. 2023 Apr 11;14:73. doi: 10.1186/s13287-023-03316-5

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© The Author(s) 2023

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. 4 — Structure and function of the bone marrow hematopoietic niche. The bone marrow hematopoietic niche is the spatial location and physiological microenvironment for the survival and self-renewal of hematopoietic stem cells, which is mainly composed of blood vessels, nerve, mesenchymal stem cells and endothelial cells. It maintains a dynamic balance between self-renewal and differentiation of stem cells. Regulatory T cells are located in bone marrow and protect hematopoietic stem cells from immune attack. (It is original by the author, the components in this figures were created with BioRender.com)