EXHIBIT 4.2 AMENDMENT NO. 2 TO SHAREHOLDER PROTECTION RIGHTS AGREEMENT THIS AMENDMENT NO. 2 dated as of May 10, 2001 (the "Amendment") to the Shareholder Protection Rights Agreement dated as of September 15, 1997, as amended by Amendment No. 1 thereto...Shareholder Protection Rights Agreement • October 18th, 2001 • Collagenex Pharmaceuticals Inc • Pharmaceutical preparations • Delaware
AMENDMENT NO. 2 TO STOCKHOLDERS AND REGISTRATION RIGHTS AGREEMENTStockholders and Registration Rights Agreement • October 18th, 2001 • Collagenex Pharmaceuticals Inc • Pharmaceutical preparations • Delaware
