UNDERWRITING AGREEMENT ---------------------- April , 1996 --- PAINEWEBBER INCORPORATED DONALDSON, LUFKIN & JENRETTE SECURITIES CORPORATION OPPENHEIMER & CO., INC. TUCKER ANTHONY INCORPORATED c/o PaineWebber Incorporated 1285 Avenue of the Americas...Underwriting Agreement • March 25th, 1996 • Advanced Magnetics Inc • In vitro & in vivo diagnostic substances • New York
