Li Ding, Washington University School of Medicine (image) Washington University School of Medicine Share Print E-Mail Caption Li Ding, PhD, and colleagues at Washington University's Genome Institute found that many older people have mutations linked to leukemia and lymphoma in their blood cells. Credit Washington University in St. Louis Usage Restrictions Credit to Washington University in St. Louis. Share Print E-Mail 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.