Eric B. Kmiec received his Ph.D. in molecular biology and microbiology at the University of Florida School of Medicine. He is currently an associate professor of microbiology in the Kimmel Cancer Institute at Thomas Jefferson University in Philadelphia. He is also head of the section on experimental therapeutics and genetic medicine at the Jefferson Center for Biomedical Research. He has published extensively in the basic science of genetic recombination and repair. In 1994, he was the scientific founder of Kimeragen, Inc., a biotechnology company formed to develop commercial applications for targeted gene repair. Address: Jefferson Center, Thomas Jefferson University, 700 East Butler Avenue, Doylestown, PA 18901. Internet: kmiec@lac.jci.tju.edu.