Exhibit 99.4 Sample Contracts

Exhibit 99.4 ------------

Exhibit 99.4 • March 5th, 2008 • Warburg Pincus Partners LLC • Biological products, (no disgnostic substances)

• Contract Type
  Exhibit 99.4
• Filed
  March 5th, 2008
• Company
  Warburg Pincus Partners LLC
• Industry
  Biological products, (no disgnostic substances)