1


                                  Exhibit 23.1

               CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS


The Board of Directors
NeoRx Corporation:

        We consent to the use of our report incorporated herein by reference and
to the reference to our firm under the heading "Experts" in the prospectus.



                                            /s/ KPMG LLP
                                            ------------------------------------
                                            KPMG LLP


Seattle, Washington

October 6, 2000



                                      II-5