While immunosuppressive medications are critical to prevent rejection of transplant organs, they also come with plenty of downsides. They can cause nasty side effects like headaches and tremors and increase the risk for infection and cancer. But what if there was a way to prevent organ rejection without using these medications? That goal fuels the work of longtime Mayo Clinic transplant researcher Mark Stegall, M.D. He leads a team of researchers developing pioneering therapies to prevent organ