The following article from American Journal of Transplantation 2008; 8: 1401–1412, doi: 10.1111/j.1600-6143.2008.02275.x, Essential Role of Sphingosine-1-Phosphate Receptor 1-Bearing CD8+CD44+CCR7+ T Cells in Acute Skin Allograft Rejection, by H. Yuling, X. Ruijing, J. Xiang, X. Luokun, Y. Wenjun, C. Feng, H. Baojun, Y. Hui, Y. Guang, Y. Chunlei, Z. Jixin, C. Lang, Q. Li, A. Chang, B. Zhuan, J. Youxin, G. Feili, T. Jinquan, published online on June 28, 2008 in Wiley Online Library (, has been retracted by agreement between the authors, the journal's Editor-in-Chief, Allan D. Kirk, and Wiley Periodicals, Inc. The retraction has been agreed upon due to concerns relating to the data contained in Figures 1 and 7. The authors, upon presentation with the figures in question, were unable to satisfactorily regenerate the data or explain the areas in question.