Correction to: Nature Cell Biology https://doi.org/10.1038/ncb1077, published online 30 November 2003.

The authors were made aware that there was a duplicated beta-actin panel in Fig. 3c of the originally published manuscript. They found and re-examined a more exposed film of the western blots used to generate Fig. 3c and confirmed that the beta-actin panel corresponding to HprEC cells was mistakenly used to generate beta-actin panels for both HprEC cells and WI38 cells. They sincerely apologize for this error in figure assembly. In this correction notice, the authors provide a revised Fig. 3c (Fig. 1 below) that includes the appropriate beta-actin panel for WI38 cells, and the original film (Supplementary Fig. 1). L321 refers to CBX7. This change does not affect the conclusions from this experiment.

Fig. 1
figure 1

Corrected Fig. 3c.