RT Journal Article SR Electronic T1 IN THIS ISSUE JF The Journal of Immunology JO J. Immunol. FD American Association of Immunologists SP 5435 OP 5436 DO 10.4049/jimmunol.0990090 VO 183 IS 9 YR 2009 UL http://www.jimmunol.org/content/183/9/5435.abstract