1. Department of Neuropsychopharmacology and Hospital PharmacyNagoya University Graduate School of MedicineNagoya 466–8560 Japan
2. Gifu Research Laboratory JBC, Inc.Gifu 503–0628 Japan
3. Department of Laboratory MedicineGifu University School of MedicineGifu 500–8705 Japan
4. Laboratory of BioOrganic ChemistryNIDDKBethesda Maryland 20892 USA
5. Department of ImmunologyNational Institute of Animal HealthTsukuba 305–0856 Japan