Increasing the beneficial bacteria, such as those that produce short chain fatty acids and indole-containing metabolites, and reducing the harmful bacteria may improve health and provide a strategy for limiting graft-versus-host disease in patients receiving bone marrow or hematopoietic stem cell transplants. Read more at N. R. Gough, Gut microbes in graft-versus-host disease. BioSerendipity (6 March 2019)
https://www.bioserendipity.com/gut-microbes-in-graft-versus-host-disease/