Dr. Anne Carpenter
          Director of the Imaging Platform
          Broad Institute
          Cambridge, MA

     Dr. Steffen Dietzel
        Ludwig-Maximilians-University München
        Walter-Brendel-Zentrum fur experimentelle Medizin (WBex)
        Marchioninistr. 27, München-Großhadern


     Dr. Igor Kireev  
        Department of Electron Microscopy
        Belozersky Institute of Physico-Chemical Biology
        Moscow State University
        
    
     Dr. Tudorita Tumbar
         Assistant Professor
         Department of Molecular Biology and Genetics
         Cornell University
         Ithaca, NY