In the article on how E2F regulates topoisomerase IIβ in the May 15, 2005 issue of Cancer Research (1), the following note should have been included: W. Jiao and H.-M. Lin contributed equally to this article.

1
Jiao W, Lin HM, Timmons J, et al. E2F-dependent repression of topoisomerase II regulates heterochromatin formation and apoptosis in cells with melanoma-prone mutation.
Cancer Res
 
2005
;
65
:
4067
–77.
View Original Article
©2005 American Association for Cancer Research.
2005