1. Department of Biomaterials Science, College of Natural Resources & Life Science/Life and Industry Convergence Research Institute, Pusan National University, Miryang 627-706, Korea.
2. Laboratory Animal Resources Division, Toxicological Evaluation Research Department, National Institute of Food and Drug Safety Evaluation, Cheongju 28159, Korea.
3. Department of Pharmacy, College of Pharmacy, Pusan National University, Busan 46241, Korea.
4. College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Korea.