Exhibit 32

                                CERTIFICATIONS OF
               CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER
                       PURSUANT TO 18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

      In connection with the Quarterly Report of CancerVax Corporation (the
"Company") on Form 10-Q for the period ended March 31, 2005 as filed with the
Securities and Exchange Commission on the date hereof (the "Report"), I, David
F. Hale, President and Chief Executive Officer of the Company, 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; and

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

      Date: May 6, 2005

                                                      /s/ David F. Hale
                                                -----------------------------
                                                        David F. Hale
                                                President and Chief Executive
                                                           Officer

      In connection with the Quarterly Report of CancerVax Corporation (the
"Company") on Form 10-Q for the period ended March 31, 2005 as filed with the
Securities and Exchange Commission on the date hereof (the "Report"), I, William
R. LaRue, Senior Vice President and Chief Financial Officer of the Company,
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; and

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

      Date: May 6, 2005

                                                      /s/ William R. LaRue
                                                -------------------------------
                                                        William R. LaRue
                                                Senior Vice President and Chief
                                                       Financial Officer