Mark Sundrud, PhD (IMAGE) Scripps Research Institute Caption Lead author Mark Sundrud, PhD, associate professor of Immunology and Microbiology at Scripps Research, Florida, examines cells in his lab. Credit Scott Wiseman for Scripps Research Usage Restrictions None License Licensed content 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.