0000891618-03-001922 Sample Contracts

EXHIBIT 2.1 AGREEMENT AND PLAN OF MERGER AND REORGANIZATION

Agreement and Plan of Merger and Reorganization • April 18th, 2003 • Protein Design Labs Inc/De • Biological products, (no disgnostic substances) • Delaware

• Contract Type
  Agreement and Plan of Merger and Reorganization
• Filed
  April 18th, 2003
• Company
  Protein Design Labs Inc/De
• Industry
  Biological products, (no disgnostic substances)
• Jurisdiction
  Delaware

AMENDMENT NO. 2 TO AGREEMENT AND PLAN OF MERGER AND REORGANIZATION

Protein Design Labs Inc/De • April 18th, 2003 • Biological products, (no disgnostic substances)

• Company
  Protein Design Labs Inc/De
• Filed
  April 18th, 2003
• Industry
  Biological products, (no disgnostic substances)

AMENDMENT NO. 1 TO AGREEMENT AND PLAN OF MERGER AND REORGANIZATION

Agreement and Plan of Merger and Reorganization • April 18th, 2003 • Protein Design Labs Inc/De • Biological products, (no disgnostic substances)

• Contract Type
  Agreement and Plan of Merger and Reorganization
• Filed
  April 18th, 2003
• Company
  Protein Design Labs Inc/De
• Industry
  Biological products, (no disgnostic substances)