Common Contracts

Exhibit 4.1 Immunomedics, Inc. 5% Senior Convertible Notes due 2008 & Common Stock Registration Rights Agreement

Immunomedics Inc • May 2nd, 2005 • In vitro & in vivo diagnostic substances • New York

• Company
  Immunomedics Inc
• Filed
  May 2nd, 2005
• Industry
  In vitro & in vivo diagnostic substances
• Jurisdiction
  New York

Exhibit 4.18 AmeriSource Health Corporation 5% Convertible Subordinated Notes due December 1, 2007 Registration Rights Agreement -----------------------------

Amerisource Health Corp/De • February 13th, 2001 • Wholesale-drugs, proprietaries & druggists' sundries • New York

• Company
  Amerisource Health Corp/De
• Filed
  February 13th, 2001
• Industry
  Wholesale-drugs, proprietaries & druggists' sundries
• Jurisdiction
  New York