UNDERWRITING AGREEMENT February __, 2000 FleetBoston Robertson Stephens Inc. Lehman Brothers Inc. Merrill Lynch, Pierce, Fenner & Smith Incorporated Pacific Growth Equities, Inc. As Representatives of the Several Underwriters c/o FleetBoston Robertson...Underwriting Agreement • February 10th, 2000 • Abgenix Inc • Biological products, (no disgnostic substances) • New York
