- 3i Technology Partners
- 5AM Ventures
- Adams Capital Management
- Advanced Technology Ventures
- Alexandria Real Estate Equities
- Alloy Ventures
- Allstate Insurance Company
- Alta Partners
- Altitude Life Science Ventures
- Amgen Ventures
- APAX Partners
- Aravis Venture Associates
- Asian Venture Capital
- Atlas Ventures
- Austin Ventures
- Bessemer Venture Partners
- California Public Employee's Retirement System
- Cardinal Partners
- CenterPoint Ventures
- Chase Capital Partners
- Chevron Technology Ventures
- Chiao Tung Bank
- China Development Industrial Bank
- Clarus Ventures
- CMEA Ventures
- ComVentures
- CW Group
- Diamondhead Ventures
- DoCoMo Capital
- Domain Associates
- Dow Chemical Co.
- Eastman Kodak Company
- El Dorado Ventures
- EDF Ventures
- Enterprise Partners
- Falcon Technology Partners
- Flagship Ventures
- Frazier Healthcare Ventures
- Genentech
- General Electric Capital Corp.
- GF Private Equity Fund
- Harris & Harris Group
- HBM BioVentures
- Hewlett Packard
- Highland Capital Partners
- Hoffman-LaRoche
- Hook Capital
- In-Q-Tel
- Intel Capital
- Intersouth Partners
- JP Morgan Partners
- Kodiak Venture Partners
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- Lilly Ventures
- Lux Capital Management
- Madrona Venture Group
- Massachusetts Institute of Technology
- Medtronic Asset Management
- Mitsui Co. Venture Partners
- Mobius Venture Capital
- Montreux Equity Partners
- Morgan Stanley Venture Partners
- MPM BioVentures
- New Enterprise Associates
- New World Ventures
- NGEN Partners
- Novartis Venture Fund
- OCA Ventures
- Orbimed Advisors
- Oxford Bioscience Partners
- OVP Venture Partners
- PacVen Walden Ventures
- Pegasus Ventures
- Polaris Venture Partners
- Prism Venture Partners
- Prospect Venture Partners
- Rensselaer Polytechnic Institute
- RSA Security
- Sevin Rosen Funds
- Sigma Partners
- Silicon Valley Bank
- Sofinnova Ventures
- SRI International
- State Farm Mutual Automobile Insurance
- Teachers Insurance & Annuity Associates
- Triton Ventures
- TVM Life Sciences
- UCLA Foundation
- UMC Capital
- Unilever Ventures
- University of California
- University of Michigan
- University of North Carolina
- University of Texas
- University of Washington
- Vanguard Ventures
- VantagePoint Venture Partners
- Venrock Associates
- Versant Ventures
- Vulcan Capital
- Washington Research Foundation
- Washington University
- Wisconsin Alumni Research Foundation
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