Sergio A. Jimenez, M.D.

Philadelphia, Pa.

Postdoctoral Fellowship (1971–1972): University of Pennsylvania/Clinical Research Center of the Philadelphia General Hospital, Philadelphia, Pa.

Current Position: The Dorrance H. Hamilton Professor of Medicine and Vice-Chairman for Research; Professor of Biochemistry and Molecular Pharmacology; Director, Division of Rheumatology, Thomas Jefferson University

Contribution: Elucidated the molecular alterations in fibroblast cells that are associated with scleroderma; described the eosinophilia myalgia syndrome and the phenomenon of “microchimerism” in people with scleroderma.