[1] NCI, Urol Oncol Branch, Bethesda, MD 20892 USA
[2] Frederick Natl Lab Canc Res, Macromol NMR Sect, Struct Biophys Lab, Frederick, MD 21702 USA
[3] EntreMed Inc, Rockville, MD 20850 USA
[4] Georgetown Univ, Med Ctr, Lombardi Comprehens Canc Ctr, Washington, DC 20057 USA
[5] NIAMSD, Prot Express Lab, NIH, Bethesda, MD 20892 USA