In the article on the role of angiopoietin-1 in tumor metastasis in the June 1, 2009 issue of Cancer Research (1), the authors and affiliations should have appeared as follows:

Tanja Holopainen,2 Huilian Huang,1 Caiping Chen,1 Kyung Eun Kim,3 Luqing Zhang,1 Fei Zhou,1 Wencan Han,1 Chaojun Li,1 Jun Yu,4 Jun Wu,4 Gou Young Koh,3 Kari Alitalo,2 and Yulong He1

1Laboratory of Vascular and Cancer Biology, MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Institute, Nanjing University, Nanjing, China; 2Molecular/Cancer Biology Laboratory, Biomedicum Helsinki, Department of Pathology, Haartman Institute and Helsinki University Central Hospital, University of Helsinki, Helsinki, Finland; 3Biomedical Research Center and Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, Korea; and 4Shanghai Genomics, Inc., Shanghai, China

Holopainen T, Huang H, Chen C, Kim KE, Zhang L, Zhou F, Han W, Li C, Yu J, Wu J, Koh GY, Alitalo K, He Y. Angiopoietin-1 overexpression modulates vascular endothelium to facilitate tumor cell dissemination and metastasis establishment.
Cancer Res