1. Tohoku University Graduate School of Medicine Department of Organ Anatomy, , Seiryo 2-1, Aoba, Sendai, Miyagi, 980-8575, Japan
2. Akita University, Graduate School of Medicine Department of Immunology, , Hondo 1-1, Akita, Akita, 010-8543, Japan
3. National Institutes of Health Molecular Biology of Bones and Teeth Section, National Institute of Dental and Craniofacial Research(NIDCR), , 30 convent drive, Building 30, Bethesda, MD, 20892, USA
4. University of Electro-Communications, Graduate School of Informatics and Engineering Department of Engineering Science, , Chofugaoka 1-5-1, Chofu, Tokyo, 182-8585, Japan
5. Akita University, Graduate School of Medicine Department of Clinical Oncology, , Hondo 1-1, Akita, Akita, 010-8543, Japan