1. Department of Physiology, Institute of Health Sciences, and Medical Research Center for Neural Dysfunction, Gyeongsang National University School of Medicine, Jinju 660-751, Korea.
2. Department of Anatomy, Institute of Health Sciences, and Medical Research Center for Neural Dysfunction, Gyeongsang National University School of Medicine, Jinju 660-751, Korea.
3. Department of Biochemistry, Institute of Health Sciences, and Medical Research Center for Neural Dysfunction, Gyeongsang National University School of Medicine, Jinju 660-751, Korea.
4. Division of Molecular Pharmacology, National Institute of Toxicological Research, Korea Food and Drug Administration, Seoul 122-704, Korea.