1. Department of Cell Biology, Kyoto Pharmaceutical University , Kyoto 607-8412 , Japan
2. Center for Mass Spectrometry and Proteomics, University of Minnesota , Minneapolis, MN 55108 , USA
3. Department of Immunology, Graduate School of Pharmaceutical Sciences, Hokkaido University , Sapporo 060-0812 , Japan
4. Department of Hematology, International University of Health and Welfare , 4-3 Kouzunomori, Narita, Chiba 286-8686 , Japan