[1] Kyoto Univ, Inst Frontier Life & Med Sci, Dept Virus Res, Lab Immune Regulat, Kyoto 6068507, Japan
[2] Kyoto Univ, Grad Sch Med, Kyoto 6068501, Japan
[3] Kyoto Univ, Grad Sch Med, Lab Biol Chem, Human Hlth Sci, Kyoto 6068507, Japan
[4] Kyoto Univ, Inst Frontier Life & Med Sci, Reprod Engn Team, Kyoto 6068507, Japan
[5] Kyushu Univ, Network Ctr Infect Dis, Med Inst Bioregulat, Div Host Def, Fukuoka 8128582, Japan
[6] Osaka Univ, Grad Sch Frontier Biosci, Lab Stem Cell Biol & Dev Immunol, Osaka 5650871, Japan
[7] Osaka Univ, Grad Sch Med, Osaka 5650871, Japan
[8] German Canc Res Ctr, Dept Mol Biol Cell 1, D-69120 Heidelberg, Germany