Michel Nussenzweig, M.D., Ph.D. is Professor of Molecular Immunology, Howard Hughes Medical Institute (HHMI), Rockefeller University. Dr. Nussenzweig is also Sherman Fairchild Professor and Senior Physician at Rockefeller. He obtained his Ph.D. degree for work on dendritic cells with Ralph Steinman at Rockefeller. He earned an M.D. degree from New York University Medical School. Dr. Nussenzweig trained in internal medicine and infectious diseases at Massachusetts General Hospital, Boston. His postdoctoral research was done with Philip Leder at Harvard Medical School on immunoglobulin genes and B cell development.