Mark R. Cullen, M.D. '76, professor of medicine (occupational and environmental medicine) and of public health, and director of the Yale Occupational and Environmental Medicine Program. Dr. Cullen has centered his work on strategies for investigation of toxic agents causing health effects in humans. Two of his current research areas focus on occupational asthma, particularly due to diisocyanates, and host factors in asbestos- related pulmonary fibrosis and lung cancer.

Ralph I. Horwitz, M.D., the Harold H. Hines Jr. Professor of Medicine and Epidemiology and chair of the Department of Internal Medicine. Dr. Horwitz has conducted clinical research on a wide range of topics, including the link between Reye's syndrome and aspirin, heart attacks, asthma and the use of inhalers, prostate gland and surgical treatment, and the epidemiologic aspects of disease.

George Miller Jr., M.D., the John F. Enders Professor of Pediatric Infectious Diseases and professor of epidemiology and of molecular biophysics and biochemistry. Dr. Miller concentrates his research on tumor viruses, including the Epstein-Barr and Kaposi's sarcoma viruses.