Medical Advisory Board 
Michael S. Brown, M.D. 
Paul J. Thomas Professor of Medicine and 
Genetics 
Director, Center for Genetic Disease 
University of Texas Southwestern Medical 
Center at Dallas 
William A. Catterall, Ph.D. 
Professor and Chair 
Department of Pharmacology 
University of Washington School of Medicine 
John E. Dowling, Ph.D. 
(through December 31, 1992) 
Maria Moors Cabot Professor of Natural 
Science 
Department of Cellular and Developmental 
Biology 
Harvard University 
Thomas J. Kelly, Jr., M.D., Ph.D. 
( effective January 1, 1993 ) 
Chairman 
Department of Molecular Biology and 
Genetics 
The Johns Hopkins University School of 
Medicine 
Hugh O. McDevitt, M.D. 
( through December 3 1, 1992 ) 
Burt and Marion Avery Professor of 
Immunology 
Professor of Microbiology, Immunology, 
and Medicine 
Stanford University School of Medicine 
Dinshaw Patel, Ph.D. 
(effective January 1, 1993) 
Abby Rockefeller Mauze Chair in 
Experimental Therapeutics 
Member, Cellular Biochemistry and 
Biophysics Program 
Memorial Sloan-Kettering Cancer Center 
William E. Paul, M.D. 
Chief, Laboratory of Immunology 
National Institute of Allergy and Infectious 
Diseases 
National Institutes of Health 
Frederic M. Richards, Ph.D. 
( through December 31, 1992 ) 
Sterling Professor Emeritus of Molecular 
Biophysics and Biochemistry 
Yale University 
Janet D. Rowley, M.D. 
Blum-Riese Distinguished Service Professor 
Departments of Medicine and Molecular 
Genetics and Cell Biology 
The University of Chicago 
David D. Sabatini, M.D., Ph.D. 
Frederick L. Ehrman Professor and Chairman 
Department of Cell Biology 
New York University School of Medicine 
Phillip A. Sharp, Ph.D. 
John D. MacArthur Professor of Biology and 
Head, Department of Biology 
Massachusetts Institute of Technology 
Melvin I. Simon, Ph.D. 
(effective January 1, 1993) 
Biaggini Professor of Biology 
California Institute of Technology 
William S. Sly, M.D. 
(through December 31, 1992) 
Alice A. Doisy Professor and Chairman 
Edward A. Doisy Department of 
Biochemistry and Molecular Biology 
St. Louis University School of Medicine 
Lloyd H. Smith, Jr., M.D., Chairman 
Professor of Medicine and Associate Dean 
University of California, San Francisco, 
School of Medicine 
Jonathan W. Uhr, M.D. 
(effective January 1, 1993) 
Professor and Chairman 
Department of Microbiology 
University of Texas Southwestern Medical 
Center at Dallas 
xxiii 
