1 Evaluation of 2D-Differential Gel Electrophoresis for Proteomic Expression Analysis of a Model Breast Cancer Cell System Severine Gharbi, Piers Gaffney, Alice Yang, Marketa J. Zvelebil, Rainer Cramer, Michael D. Waterfield and John F. Timms * Ludwig Institute for Cancer Research, 91Riding House Street, London, W1W 7BS, UK *To whom correspondence should be addressed Copyright 2001 by The American Society for Biochemistry and Molecular Biology, Inc. MCP Papers in Press. Published on November 19, 2001 as Manuscript T100007-MCP200