PASADENA, Calif.--(BUSINESS WIRE)--May 5, 2006--Arrowhead Research Corporation (Nasdaq:ARWR - News), announced that Dr. Mark E. Davis, professor of chemical engineering at the California Institute of Technology, and founding scientist of Arrowhead subsidiaries Insert Therapeutics and Calando Pharmaceuticals, was elected to the National Academy of Sciences. Already a member of the National Academy of Engineering, Dr. Davis is one of a few who hold both honors.
