Bibliographical noteFunding Information:
We would like to thank Tamar Lev-Golan and Inbal Caspi for technical assistance and Phil Manos for help with IHC. A.U. is an EMBO fellow. N.B. is the Herbert Cohn Chair in Cancer Research. This research was partially supported by funds from the Israel Science Foundation (Grant number 227/06) and the European Community (ESTOOLS, Grant number 018739). We gratefully acknowledge support for this project provided by a grant from the Legacy Heritage Fund of New York. G.Q.D. was supported by grants from the National Institutes of Health, the Howard Hughes Medical Institute, and the Manton Center for Orphan Disease Research. G.Q.D. is a member of the Scientific Advisory Boards of iPierian, Inc., Epizyme, and MPM Capital.