1 EXHIBIT 10.9 CHEMGENICS PHARMACEUTICALS INC. HAS OMITTED FROM THIS PART OF EXHIBIT 10.9 PORTIONS OF THE AGREEMENT FOR WHICH CHEMGENICS PHARMACEUTICALS INC. HAS REQUESTED CONFIDENTIAL TREATMENT FROM THE SECURITIES AND EXCHANGE COMMISSION. THE...License Option, License and Royalty Agreement • December 18th, 1996 • Chemgenics Pharmaceuticals Inc • New York
