Heat Maps Showing Gene Expression Changes (image) University of Bristol Caption Aggressor cells, which have the potential to cause autoimmunity, are targeted by treatment, causing conversion of these cells to protector cells. Gene expression changes gradually at each stage of treatment, as illustrated by the color changes in this series of heat maps. Credit University of Bristol/Dr. Bronwen Burton Usage Restrictions Please credit University of Bristol/Dr. Bronwen Burton Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.