[1] Univ Alabama Birmingham, Dept Microbiol, Birmingham, AL 35294 USA
[2] St Jude Childrens Res Hosp, Dept Immunol, 332 N Lauderdale St, Memphis, TN 38105 USA
[3] St Jude Childrens Res Hosp, Grad Sch Biomed Sci, 332 N Lauderdale St, Memphis, TN 38105 USA
[4] Univ Calif Los Angeles, Dept Microbiol Immunol & Mol Genet, Los Angeles, CA USA
[5] Univ Calif Los Angeles, Inst Mol Biol, Los Angeles, CA 90024 USA
[6] Garvan Inst Med Res, Immunol Div, Sydney, NSW 2010, Australia
[7] UNSW, Sydney, NSW 2010, Australia
[8] Yale Sch Med, Dept Immunobiol, New Haven, CT USA
[9] Yale Sch Med, Dept Mol Biophys & Biochem, New Haven, CT USA
[10] Scripps Res Inst, Dept Immunol & Microbiol, La Jolla, CA 92037 USA