1. Institute for Amphibian Biology, Graduate School of Science, Hiroshima University
2. Nihon Pharmaceutical University
3. Graduate School of Biomedical Sciences, Hiroshima University
4. Department of Cytology and Histology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
5. School of Medical Technology, Sanyo Women's College
6. Laboratory of Developmental Biology, Department of Biological Science, Graduate School of Science, Hiroshima University