Correction to: British Journal of Cancer (2009) 101, 441–451; doi:10.1038/sj.bjc.6605186

Owing to an error during the final correction of this paper, panels E and F in Figure 4 were incorrectly typeset, resulting in the loss of part of panel 4E. The publishers apologise for this mistake.

Figure 4
figure 1

Differences in PARP activity and in viability between WT and MLH1-depleted cells. (E) WT and M1 cells were treated with 2 mM MNU, either alone or in combination with 30 mM DPQ or 10 mM Boc-D-FMK; as a control, cells treated with camptothecin were assayed at 72 h; values represent the mean of three samples ±s.d.; ***P<0.001; *P<0.05; NS, not significant. (F) Clonogenic assays in response to 2 mM MNU, 30 mM DPQ or a combination of the two were carried out on the indicated cell lines with two plates per cell line; error bars indicate ±s.d. values. The assay was carried out three times for the fibroblasts (WT and M1), with representative results shown, and once for the controls (HCT116 and HCT116þchr3).

The correct panels 4E and 4F are reproduced below: