Michael B Brenner, M.D. is Chief, Division of Rheumatology, Immunology and Allergy at Brigham and Women’s Hospital, Boston, Massachusetts, and the Theodore Bevier Bayles Professor of Medicine, at Harvard Medical School. He is a member of the National Academy of Sciences, USA, Fellow American Academy of Microbiology and Fellow American Association for the Advancement of Sciences. His research involves basic and translational studies in T cell biology, antigen presentation, microbial and autoimmunity. His laboratory has identified and defined the functions of several innate and adaptive T cell subsets and the role of mesenchymal cadherin adhesion molecules in modulating the pathological behavior of fibroblasts in rheumatoid arthritis.