1. Xenotransplantation Research Center; Seoul National University College of Medicine; Seoul Korea
2. Cancer Research Institute; Seoul National University College of Medicine; Seoul Korea
3. Department of Microbiology and Immunology; Seoul National University College of Medicine; Seoul Korea
4. Department of Biomedical Sciences; Seoul National University Graduate School; Seoul Korea
5. Institute of Endemic Diseases; Seoul National University College of Medicine; Seoul Korea
6. Department of Microbiology; Kyungpook National University School of Medicine; Daegu Korea