Correction to: Prostate Cancer and Prostatic Diseases (2003) 6, 6–11. doi:10.1038/sj.pcan.4500611

In the above paper, the source of the cells used for the experiments were not fully acknowledged. With reference to the materials and methods section under ‘cell lines’, text should read ‘Cell lines P4E6’ (Maitland NJ, Mackintosh CA, Hall J, Sharrad M, Quinn G, and Lang S, In vitro models to study cellular differentiation and function in human prostate cancer cells. Radiat Res 2001; 155: 133–142), ShMac-1, ShMac-4 and ShMac-5 were developed by the Yorkshire Cancer Research Centre Unit at the University of York (Professor Norman Maitland).