1. Xenotransplantation Research Center; Seoul National University Graduate School; Seoul Korea
2. Institute of Endemic Diseases; Seoul National University Graduate School; Seoul Korea
3. Biomedical Research Institute; Seoul National University Hospital; Seoul Korea
4. Seoul Animal Medical Center; Seoul Korea
5. Department of Microbiology and Immunology; Seoul National University Graduate School; Seoul Korea
6. Cancer Research Institute; Seoul National University Graduate School; Seoul Korea
7. Department of Biomedical Sciences; Seoul National University Graduate School; Seoul Korea
8. Cancer Research Institute; Seoul National University Graduate School; Seoul Korea. Department of Biomedical Sciences; Seoul National University Graduate School; Seoul Korea