EXHIBIT 4.3 ----------- VION PHARMACEUTICALS, INC. STOCK OPTION AGREEMENT THIS AGREEMENT, made as of the ____ day of ______, 2000 by and between VION PHARMACEUTICALS, INC., a Delaware corporation (the "Company"), and, , (the "Holder"): The Board of...Stock Option Agreement • June 7th, 2000 • Vion Pharmaceuticals Inc • Biological products, (no disgnostic substances)
