EXHIBIT 23 Exhibit 23 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS To CYTOGEN CORPORATION: As independent public accountants, we hereby consent to the incorporation of our report included in this Form 10-K, into the Company's previously filed Form S-8 Registration Statement (File No. 33-30595), filed with the Securities and Exchange Commission on August 18, 1989, Form S-3 Registration Statement (File No. 33-35140), filed with the Securities and Exchange Commission on May 31, 1990, Form S-8 Registration Statement (File No. 33-52574), filed with the Securities and Exchange Commission on September 29, 1992, Form S-8 Registration Statement (File No. 33-57004), filed with the Securities and Exchange Commission on January 12, 1993, Form S-3 Registration Statement (File No. 33-77396) filed with the Securities and Exchange Commission on April 6, 1994, Form S-8 Registration Statement (File No. 33-63321), filed with the Securities and Exchange Commission on October 10, 1995, Form S-8 Registration Statement (File No. 333-00431), filed with the Securities and Exchange Commission on January 25, 1996 and Form S-8 Registration Statement (File No. 333-04679), filed with the Securities and Exchange Commission on May 29, 1996. ARTHUR ANDERSEN LLP Philadelphia, PA March 21, 1997