Dr. Weiss is also Ephraim P. Engleman Distinguished Professor of Rheumatology and Professor of Medicine and of Microbiology and Immunology at the University of California, San Francisco. He received his undergraduate education at the Johns Hopkins University and his M.D. and Ph.D. degrees at the University of Chicago, where he studied immunology with Frank Fitch. He did postdoctoral work with Jean-Charles Cerottini and Theodore Brunner at the Swiss Institute for Experimental Cancer Research, Lausanne. After an internship and residency in internal medicine at UCSF, he was a postdoctoral fellow in rheumatology with John Stobo. Dr. Weiss is a member of the National Academy of Sciences, the American Academy of Arts and Sciences, the Institute of Medicine, and the American Academy of Microbiology.