1Department of Microbiology, Gyeongsang National University School of Medicine, Jinju 660-751, Republic of Korea, 
2Research Institute of Life Science, Gyeongsang National University, Jinju 660-701, Republic of Korea, 
3Korea Forest Research Institute, Suwon, 441-350, Republic of Korea, 
4Department of Pediatrics, Gyeongsang National University School of Medicine, Jinju 660-751, Republic of Korea
								
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					Corresponding author: 
					Woo-Kon Lee , Tel: +82-55-772-8083, 
 
 
			
				Received: 26 December 2013   • Revised: 8 May 2014   • Accepted: 15 May 2014