RT Journal Article SR Electronic T1 IN THIS ISSUE JF The Journal of Immunology JO J. Immunol. FD American Association of Immunologists SP 4431 OP 4432 DO 10.4049/jimmunol.181.7.4431 VO 181 IS 7 YR 2008 UL http://www.jimmunol.org/content/181/7/4431.abstract