Dr. Mary Flowers is a world-renowned expert in the study and treatment of chronic graft-vs-host disease, or cGVHD, a complication of transplantation in which the donated stem cells attack the recipient's healthy tissues. Dr. Flowers helps transplant survivors and their primary care physicians manage post-treatment complications as patients recover and resume their lives. In addition to her GVHD research, Dr. Flowers studies the effectiveness of using donated lymphocytes, a type of immune cell, to treat recurrent malignancies after transplantation with donated cells.