Imperial Cancer Research Fund Molecular Pharmacology Unit, Biomedical Research Centre, Level 5, Ninewells Hospital and Medical School, Dundee, DD1 9SY, United Kingdom; Gene Targeting Laboratory, Centre for Genome Research, University of Edinburgh, King’s Buildings, West Mains Road, Edinburgh, EH9 3JQ, United Kingdom; and Molecular Carcinogenesis Group, CRC Beatson Laboratories, Department of Medical Oncology, Alexander Stone Building, Switchback Road, Garscube Estate, Glasgow, G61 1BD, United Kingdom (At 1998-04-28)
