1921-

American physicist who won the 1977 Nobel Prize for the development of radioimmunoassays for peptide hormones. As founder of the radioisotope laboratory at the Bronx Veterans Administration Hospital, she began a very fruitful collaboration with Dr. Solomon Berson. The revolutionary radioimmunoassay developed by Yalow and Berson made it possible to measure minute amounts of almost any substance of biologic interest, such as hormones, drugs, enzymes, and antibodies, in blood and body tissues.