Retraction Note to: British Journal of Cancer (2004) 91, 2042–2047; https://doi.org/10.1038/sj.bjc.6602254, published online 14 December 2004

The Editor-in-Chief has retracted this article because serious concerns have been raised about integrity of the data. Specifically:

Figure 1a—the Id-1 and Actin bands for the Skov3 panel appear to be very similar.

The Actin bands in the Ovca433 panel in Figure 1a seem very similar to the Actin bands for the Ovca433 panel in Figure 4a.

Figure 1a—it appears that some images have been published earlier with different labels by some of the same authors.1,2

In Figure 1b the Actin band for the Ovca420 panel and the Actin band for the Ovca432 panel seem to be mirror images.

The authors were unable to provide raw data. The data reported in this article are therefore unreliable.

S.W. Tsao agrees to this retraction. The editor was not able to obtain a current email address for X. Zhang, M.-T. Ling, H. Feng, Y.C. Wong and X. Wang.