RETRACTED: Expression and function of Toll-like receptor on T cells

This article has been retracted at the request of the authors. This article is a duplication of a paper that has already appeared in Proc Natl Acad Sci U S A. 2004 Mar 2;101(9):3029-34. Epub 2004 Feb 23. The authors would like to apologize to the readers for this error on their part.