| Affiliation: | Genetics Laboratory, Department of Biochemistry, South Parks Road, Oxford, OXI 3QU, England;Biological Laboratories, Harvard University, 16 Divinity Avenue, Cambridge, Massachusetts, 02138, U.S.A. and Sidney Farber Cancer Institute, Charles A. Dana Cancer Center, 44 Binney Street, Boston, Massachusetts, 02115, U.S.A.;Department of Neurobiology Harvard Medical School, 25 Shattuck Street, Boston, Massachusetts, 02115, U.S.A.;National Institute for Medical Research, The Ridgeway, Mill Hill, London, NW7 IAA, England. |
