EXHIBIT 10.20 COLLABORATIVE DISCOVERY AND LEAD OPTIMIZATION AGREEMENT This Collaborative Discovery and Lead Optimization Agreement (the "Agreement") is made and effective as of February 11, 2000 (the "Effective Date"), by and between 3-Dimensional...Collaborative Discovery and Lead Optimization Agreement • August 2nd, 2000 • 3 Dimensional Pharmaceuticals Inc • Pharmaceutical preparations • Delaware
Exhibit 10.1 NOTE: Certain portions of this Collaborative Discovery and Lead Optimization Agreement and its appendix, which are identified by the symbol "[* *]", have been omitted and filed separately with the Securities and Exchange Commission...Collaborative Discovery and Lead Optimization Agreement • November 15th, 2002 • 3 Dimensional Pharmaceuticals Inc • Pharmaceutical preparations • Delaware
