News and Commentary
Immunology and Cell Biology (2009) 87, 502–504; doi:10.1038/icb.2009.49; published online 4 August 2009
Regulating the regulators
Reining in FoxP3+ regulatory T cells by the sphingosine 1-phosphate-S1P1 axis
Chang H Kim1
1Laboratory of Immunology and Hematopoiesis, Department of Comparative Pathobiology, Purdue Cancer Center, Purdue University, 725 Harrison Street, West Lafayette, IN 47907, USA
Correspondence: Dr CH Kim, E-mail: chkim@purdue.edu
