Exhibit 10.23 AMENDMENT TO AGREEMENT FOR AN EXCLUSIVE ALLIANCE TO DEVELOP, MANUFACTURE AND MARKET A CHIP-BASED SCREENING SYSTEM FOR CELL ANALYSIS BETWEEN ACLARA BIOSCIENCES AND CELLOMICS, INC. This Amendment is made as of August 9, 2000 by and between...Agreement for an Exclusive Alliance to Develop, Manufacture and Market a Chip-Based Screening System for Cell Analysis • November 16th, 2000 • Cellomics Inc • Services-commercial physical & biological research
