Vascular endothelial growth factor isoforms display distinct activities in promoting tumor angiogenesis at different anatomic sites

P. Guo, L. Xu, S. Pan, R. A. Brekken, S. T. Yang, G. B. Whitaker, M. Nagane, P. E. Thorpe, J. S. Rosenbaum, H. J S Huang, W. K. Cavenee, S. Y. Cheng