EXHIBIT 31.2


                            SECTION 906 CERTIFICATION

        In  connection  with  the  Quarterly  Report on Form 10-QSB of Arrowhead
Research Corporation (the "Company") for the quarter ended December 31, 2003, as
filed  with  the  Securities  and  Exchange  Commission  on the date hereof (the
"Report"),  I, R. Bruce Stewart, the chief executive officer and chief financial
officer  of  the Company, hereby certify, pursuant to 18 U.S.C. Section 1350, as
adopted  pursuant  to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my
knowledge:

     (1)     The Report fully complies with the requirements of Section 13(a) or
15(d)  of  the  Securities  Exchange  Act  of  1934,  as  amended;  and

     (2)     The  information  contained  in  the Report fairly presents, in all
material  respects,  the  financial  condition  and results of operations of the
Company.

Date: February 13, 2004
                                    /s/ R. BRUCE STEWART
                                    ---------------------
                                    R. Bruce Stewart



     A  signed  original  of  this written statement required by Section 906 has
been  provided  to the Company and will be retained by the Company and furnished
to  the  Securities  and  Exchange  Commission  or  its  staff  upon  request.