| Affiliation: | (1) Department of Molecular Biology, University of California, 94720 Berkeley, California, USA;(2) Department of Therapeutic Radiology, Yale University School of Medicine, 06510 New Haven, Connecticut, USA;(3) Department of Molecular Biophysics and Biochemistry, Yale University School of Medicine, 06510 New Haven, Connecticut, USA;(4) Present address: Department of Microbiology, Umea University, S-90187 Umea, Sweden;(5) Present address: Laboratory of Molecular Genetics, National Institute of Environmental Health Sciences, P.O. Box 12233, 27709 Research Triangle Park, North Carolina, USA |
