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Leland Hartwell, Paul Nurse, Timothy Hunt, Stephen Friend and Leroy Hood

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Leland Hartwell, director of the Fred Hutchinson Cancer Research Center in Seattle, and co-founder of Rosetta Inpharmatics, was awarded the Nobel Prize in Physiology or Medicine for 2001, the Karolinksa Institute announced this week.

Hartwell, along with Paul Nurse and Timothy Hunt, both of London’s Imperial Cancer Research Fund, received the award for their discoveries of “key regulators of the cell cycle.”

Hartwell founded Rosetta Inpharmatics with Stephen Friend, now CEO, and Leroy Hood in 1996. The company, acquired in May by Merck, produces the Rosetta Resolver gene expression analysis software. Hartwell and Friend developed the Rosetta Resolver’s core gene expression pattern analysis method while working on a project at the Hutchinson Center.