Retraction to: British Journal of Cancer https://doi.org/10.1038/bjc.2012.251, published online 07 June 2012

The Editor-in-Chief has retracted this article. After publication it was brought to the attention of the publisher that figures 3B and 3N appear to overlap with rotation, representing different conditions, and figures 5A (Normal) and 5B (Normal) appear to overlap, describing different treatments. The authors did not respond to the publisher regarding these concerns. The Editor has lost confidence in the data and conclusions of this article.

The authors have not responded to correspondence from the publisher regarding this retraction.