EXHIBIT 99.3 TERMINATION AGREEMENT THIS TERMINATION AGREEMENT (this "Agreement") is made and entered into this 2nd day of June, 2003, by and between Texas Biotechnology Corporation, a Delaware corporation having its principal executive office at 6700...Termination Agreement • September 11th, 2003 • Encysive Pharmaceuticals Inc • Biological products, (no disgnostic substances) • Texas
