Nature 457, 910–914 (2009); doi:10.1038/nature07762

In Fig. 4b of this Article, a typographical error was made in reporting sarcosine levels in the DU145 cell line represented. The y axis values should be in the scale of 0–50 pmoles per 106cells, rather than 0–500 pmoles per 106cells. This error has been verified and does not affect the conclusion of the paper. The correct graph is shown below in Fig. 1. The authors would like to apologize for any confusion the error may have caused.

Figure 1
figure 1

This is the corrected Fig. 4b of the original Article.

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