Affiliation: | (1) Biological Carcinogenesis and Development Program, Program Resources, Inc., DynCorp, NCI-Frederick Cancer Research and Development Center, 21702 Frederick, MD, USA;(2) Department of Biology, George Mason University, 22030 Fairfax, VA, USA;(3) Laboratory of Viral Carcinogenesis, National Cancer Institute-FCRDC, 21702 Frederick, MD, USA;(4) Present address: Chromosome Research Unit, Faculty of Science, Hokkaido University, 060 Sapporo, Japan |