Affiliation: | From the ‡Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois 61802.;§Markey Cancer Center, Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, Kentucky 40536-0509, and ;‖Department of Cell and Molecular Biology, Northwestern University, Feinberg School of Medicine, Chicago, Illinois 60611 |