Ulrich von Andrian, M.D., Ph.D. is the Mallinckrodt Professor of Immunopathology at Harvard Medical School.  He received his medical degree from the Ludwig-Maximilians University in Munich, Germany, where he also conducted doctorate research on blood-brain barrier dysfunction following brain injury.  In 1989, he joined the La Jolla Institute for Experimental Medicine and UCSD as a postdoctoral fellow working with Dr. Karl-E. Arfors.  His postdoctoral research involved the development of intravital microscopy techniques that led to the discovery of the multi-step leukocyte adhesion cascade in vivo.  After a second postdoctoral fellowship in the laboratory of Dr. Eugene C. Butcher at Stanford University, Dr. von Andrian joined the Faculty of Harvard Medical School in 1994. He was appointed to his current position in 2006. His scientific research is focused on the regulation and function of immune cells in health and disease. To this end, his laboratory employs intravital microscopy techniques combined with other experimental approaches to study the migration, communication, differentiation and function of immune cells in living animals.