1. Department of Biological Sciences, College of Science, Ibaraki University, Mito, Ibaraki, Japan
2. Department of Anatomy and Cell Biology, Osaka Medical College, Takatsuki, Osaka, Japan
3. Department of Pathology, Institutes of Development, Aging and Cancer, Tohoku University, Sendai, Miyagi, Japan
4. Laboratory of Molecular Pharmacology, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
5. Faculty of Agriculture, Niigata University, Niigata, Niigata, Japan
6. National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
7. Laboratory of Cell Engineering and Molecular Genetics, Faculty of Science and Engineering, Iwate University, Morioka, Iwate, Japan
8. Graduate School of Agricultural Sciences, Tohoku University, Sendai, Miyagi, Japan