Dr. Oliver Smithies, Excellence professor of pathology and laboratory medicine at the University of North Carolina at Chapel Hill School of Medicine, is a co-recipient of this year’s Nobel Prize in medicine, awarded August 8, 2007. Smithies shares the award with American Mario R. Capecchi and Briton Martin J. Evans for developing a gene-targeting technique in mice. (UPI Photo/Dan Sears/Uiversity of North Carolina)