1. Laboratory of Anatomy, Department of Basic Veterinary Sciences, Faculty of Veterinary Medicine Hokkaido University Sapporo Japan
2. Laboratory of Agrobiomedical Science, Faculty of Agriculture Hokkaido University Sapporo Japan
3. Department of Biological Safety Research, Chitose Laboratory Japan Food Research Laboratories Chitose Japan
4. Department of Histology, Faculty of Veterinary Medicine Zagazig University Zagazig Egypt
5. Department of Anatomy, Histology and Physiology, Faculty of Animal Science and Veterinary Medicine Sher‐e‐Bangla Agricultural University Dhaka Bangladesh
6. Laboratory of Cell and Tissue Biology, Research Faculty of Agriculture Hokkaido University Sapporo Japan