Open AccessArticle by Suparna Ghosh 1 and Seung Joo Cho 1,2,* 1 Department of Biomedical Sciences, College of Medicine, Chosun University, Gwangju 501-759, Republic of Korea 2 Department of Cellular Molecular Medicine, College of Medicine, Chosun University, Gwangju 501-759, Republic of Korea * Author to whom correspondence should be addressed.