Smithies, of the University of North Carolina at Chapel Hill School of Medicine, a co-recipient of this year's Nobel Prize in Physiology or Medicine, speaks during a news conference at the Lineberger

 
Smithies, of the University of North Carolina at Chapel Hill School of Medicine, a co-recipient of this year
Oliver Smithies, Ph.D., of the University of North Carolina at Chapel Hill School of Medicine, a co-recipient of this year's Nobel Prize in Physiology or Medicine, speaks during a news conference at the Lineberger Comprehensive Cancer Center in Chapel Hill, North Carolina October 8, 2007. Smithies shares the award with two other scientists, Mario R. Capecchi of the University of Utah, and Martin J. Evans of Cardiff University in Wales. REUTERS/Chris Keane (UNITED STATES)