Erratum for vol. 108, p. 407

In the commentary by Mackenzie and Lock entitled “An endothelial metronome breast cancer?” which appeared in the July 15, 2006, issue of Blood (Volume 108:407-408), a word was omitted from the title. The title should have read “An endothelial metronome for breast cancer?”

This title error was corrected online in departure from print.