AURORA BIOSCIENCES CORPORATION

Aurora Biosciences Corporation ("Aurora" or the "Company") designs and develops proprietary drug discovery systems, services and technologies to accelerate and enhance the discovery of new medicines. Aurora is developing an integrated technology platform comprised of a portfolio of proprietary fluorescent assay technologies and an ultra-high throughput screening ("UHTS") system designed to allow assay miniaturization and to overcome many of the limitations associated with the traditional drug discovery process.