0000950135-02-001431 Sample Contracts

EXHIBIT 4.2

Warrant Agreement • March 20th, 2002 • Matritech Inc/De/ • In vitro & in vivo diagnostic substances

• Contract Type
  Warrant Agreement
• Filed
  March 20th, 2002
• Company
  Matritech Inc/De/
• Industry
  In vitro & in vivo diagnostic substances

EXHIBIT 4.3

Placement Agent Warrant Agreement • March 20th, 2002 • Matritech Inc/De/ • In vitro & in vivo diagnostic substances • Massachusetts

• Contract Type
  Placement Agent Warrant Agreement
• Filed
  March 20th, 2002
• Company
  Matritech Inc/De/
• Industry
  In vitro & in vivo diagnostic substances
• Jurisdiction
  Massachusetts

EXHIBIT 4.5

Engagement Letter • March 20th, 2002 • Matritech Inc/De/ • In vitro & in vivo diagnostic substances • New York

• Contract Type
  Engagement Letter
• Filed
  March 20th, 2002
• Company
  Matritech Inc/De/
• Industry
  In vitro & in vivo diagnostic substances
• Jurisdiction
  New York