Researchers at the University of Colorado School of Medicine have found that a unique bacteria found in the gut may be responsible for causing rheumatoid arthritis (RA) in patients who are already predisposed to the autoimmune disease. A group of researchers from the Division of Rheumatology worked on the study under the leadership of Kristine Kuhn, an associate professor of rheumatology. The study was recently published in the journal Science Translational Medicine. Meagan Chriswell, a medical student at CU, is the paper’s lead author.