1. College of Veterinary Medicine, Chonnam National University, Gwangju 500-757, Republic of Korea
2. Jeonbuk Department of Inhalation Research, Korea Institute of Toxicology, Jeonbuk 580-185, Republic of Korea
3. Natural Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology, Chungbuk 363-883, Republic of Korea
4. Biomedical Mouse Resource Center, Korea Research Institute of Bioscience and Biotechnology, Chungbuk 363-883, Republic of Korea