In the article on SIRT1 and prostate cancer in the July 15, 2007 issue of Cancer Research (1), there is an error in Fig. 3D. The corrected figure appears below. 
References
1
Huffman DM, Grizzle WE, Bamman MM, Kim J-s, Eltoum IA, Elgavish A, Nagy TR. SIRT1 is significantly elevated in mouse and human prostate cancer.
Cancer Res
2007
; 67
: 6612
–8.