Arthur Beck Pardee (July 13, 1921 – February 24, 2019) was an American biochemist. One biographical portrait begins "Among the titans of science, Arthur Pardee is especially intriguing." There is hardly a field of molecular biology that is not affected by his work, which has advanced our understanding through theoretical predictions followed by insightful experiments. He is perhaps most famous for his part in the 'PaJaMo experiment' of the late 1950s, which greatly helped in the discovery of messenger RNA. He is also well known as the discoverer of the restriction point, in which a cell commits itself to certain cell cycle events during the G1 cycle. He did a great deal of work on tumor growth and regulation, with a particular focus on the role of estrogen in hormone-responsive tumors. He is also well known for the development of various biochemical research techniques, most notably the differential display methodology, which is used in examining the activation of genes in cells. More recently he championed the acceptance and adoption of the conceptual review as a valuable approach to unearthing new knowledge from the enormous stores of information in the scientific literature. He died in February 2019 at the age of 97. Career Pardee received his Bachelor of Science degree from the University of California, Berkeley in 1942 while his Master's (1943) and PhD (1947) degrees were earned at the California Institute of Technology under the mentorship of Linus Pauling, who he considered to be the greatest chemist of the 20th century. Pardee did postdoctoral work at the University of Wisconsin–Madison before returning to Berkeley as an instructor in biochemistry in 1949. In the 1950s, he was on a sabbatical with Francois Jacob and Jacques Monod in Paris. In 1961 Pardee became Professor in Biochemical Sciences at Princeton University while in 1975 he moved to Boston to become Professor of Biological Chemistry and Molecular Pharmacology at the Dana–Farber Cancer Institute and Harvard Medical School as well as Chief for the Division of Cell Growth and Regulation at the Dana–Farber Cancer Institute. In 1981, Pardee became a founding member of the World Cultural Council. Pardee became an emeritus professor at Dana-Farber in 1992. He became a member of the American Academy of Arts and Sciences in 1936, the National Academy of Sciences in 1968, and the American Philosophical Society in 2001. PaJaMo While on sabbatical in Paris with Jacob and Monod, Pardee