Due to a typographical error, the publication date in the copyright line was incorrect. It should be Volume 197, Number 7, April 7, 2003. The corrected date appears below. The date has been corrected in the online version of this article.
J. Exp. Med. © The Rockefeller University Press • 0022-1007/2003/04/885/14 $8.00
Volume 197, Number 7, April 7, 2003 885–898
The Rockefeller University Press
2003