1. Department of Veterinary Pharmacology and Toxicology; College of Veterinary Medicine; Chonnam National University; Gwangju 500-757 Republic of Korea
2. Department of Veterinary Toxicology; College of Veterinary Medicine; Chungbuk National University; Cheongju 361-763 Republic of Korea
3. Biomedical Mouse Resource Center; Korea Research Institute of Bioscience and Biotechnology; Chungbuk 363-883 Republic of Korea