Donald E. Campbell, associate professor emeritus C-E in pediatrics at the Perelman School of Medicine, died January 21. He was 73.

Dr. Campbell earned a BS from Delta State University in Cleveland, Mississippi in 1969, an MS from the University of Mississippi School of Medicine in 1973 and a PhD from the University of Mississippi School of Medicine in 1975.

He joined Penn in 1987 as a clinical assistant professor of pediatrics in the School of Medicine. He went on to be promoted to assistant professor, assistant professor C-E, and in 1996 he was promoted to associate professor C-E. His area of expertise was quantitative flow cytometry. Dr. Campbell also served as the scientific director for the Clinical Immunology Laboratory at CHOP. He retired in 2010.