Science (2012) - Comment
pubmed: 22539553  doi: 10.1126/science.1217405  issn: 1095-9203  issn: 0036-8075 

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O. Shoval, H. Sheftel, G. Shinar, Y. Hart, O. Ramote, A. Mayo, E. Dekel, K. Kavanagh, U. Alon