by Kumamoto University Credit: The EMBO Journal (2022). DOI: 10.15252/embj.2022110712 The human body contains an array of coexisting commensal microbes, primarily gut bacteria, which have been linked to the regulation of hematopoiesis, or the production of blood and its components (including immune cells). However, how the hematopoietic system manages microbial signals and maintains tissue integrity in the...