PASADENA, Calif.--(BUSINESS WIRE)--Arrowhead Research Corporation (NASDAQ:ARWR) announced today that Dr. Jeremy Heidel, Chief Scientific Officer of Calando Pharmaceuticals, Inc., a majority-owned subsidiary of Arrowhead, will present at the Second Annual Meeting of the Oligonucleotide Therapeutic Society on Friday, October 20, 2006 at 5:00 p.m. ET, at The Rockefeller University in New York City.