Harlow, UK 04 April 2007 - Argenta Discovery Ltd., the contract and respiratory drug development company, has announced that it has entered into a lead optimisation collaboration with BioTie Therapies Corp. Under the terms of the agreement, scientists from the two companies will exploit Argenta’s expertise in medicinal chemistry, computer-aided drug design (CADD), and early ADME to advance one of BioTie’s novel therapeutics programmes towards development candidate nomination.