1. Cook, J. Biotech startup VLST gets $55 million. Seattle Post-Intelligencer, (June 16, 2006).
2. Lawrence, S. Bioentrepreneur, published online 22 December 2005 (doi:10.1038/bioent897).
3. Thiel, K. Nat. Biotechnol. 22, 1087–1092 (2004).
4. Hendrickson, D. Mass High Tech, published online Sept. 9, 2005 http://masshightech.bizjournals.com/masshightech/ stories/2005/09/12/story5.html