S. Joseph Tarnowski

S.
JOSEPH TARNOWSKI, PH.D., 49, has served as the Company's Senior Vice President, Manufacturing Operations and Product Development since April 2001.
He was Vice President, Product and Process Development from January 1999 through April 2001.
Prior to joining the Company, he held various positions with CellPro, Inc., the principal business of which was the development, manufacture and marketing of automated systems that utilize monoclonal antibodies to purify large quantities of specific cells for therapeutic and diagnostic applications.
He joined CellPro in June 1992 as Vice President of Operations, was appointed to