Institution: | 1 Howard Hughes Medical Institute, The Rockefeller University, New York, NY 10065, USA 2 Laboratory of Mammalian Cell Biology & Development, The Rockefeller University, New York, NY 10065, USA 3 IRIBHM, Université Libre de Bruxelles, Brussels 1050, Belgium 4 Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA |