EXHIBIT 10.52 SECOND AMENDMENT TO THE CORVAS INTERNATIONAL, INC. 401(K) COMPENSATION DEFERRAL SAVINGS PLAN AND TRUST AGREEMENT The Corvas International, Inc. 401(k) Compensation Deferral Savings Plan and Trust Agreement (the "Plan"), as amended and...401(k) Compensation Deferral Savings Plan Amendment • March 14th, 2003 • Corvas International Inc • Pharmaceutical preparations
