1 Cancer Biology and Genetics Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
2 Developmental Biology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
3 Wellcome Trust-Medical Research Council Centre for Stem Cell Research, University of Cambridge, Cambridge, UK.
4 Tsinghua University School of Medicine, Department of Basic Sciences, Beijing, China.
5 Department of Histo-embryology, Genetics and Developmental Biology, Shanghai Key Laboratory of Reproductive Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
6 Gerstner Sloan Kettering Graduate School of Biomedical Sciences, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
7 Chemical Biology and Therapeutics Science program, Broad Institute, Cambridge, MA, USA.
8 Microchemistry and Proteomics, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
9 Cancer Biology and Genetics Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, USA. j-massague@ski.mskcc.org.