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        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;"><strong>UNITED
          STATES</strong></font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;"><strong>SECURITIES
          AND EXCHANGE COMMISSION</strong></font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;"><strong>WASHINGTON,
          D.C. 20549</strong></font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;"><strong>________________________________________</strong></font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;"><strong>FORM
          8-K</strong></font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;"><strong>CURRENT
          REPORT</strong></font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;"><strong>PURSUANT
          TO SECTION 13 OR 15(d) OF THE</strong></font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;"><strong>SECURITIES
          EXCHANGE ACT OF 1934</strong></font></div>
        <div><br></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">Date
          of
          report (Date of earliest event reported): <u>August 8, 2007</u></font></div>
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        <div>&#160;</div>
        <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><img src="cyt1.jpg" alt=""><br></div>
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          CORPORATION</font></div>
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        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">(Exact
          Name of Registrant as Specified in Charter)</font></div>
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                <td valign="top" width="2%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">&#160;</font></td>
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                    or Other Jurisdiction of Incorporation)</font></div>
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                    File Number)</font></div>
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                <td valign="top" width="2%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">&#160;</font></td>
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                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">(I.R.S.
                    Employer Identification No.)</font></div>
                </td>
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                <td valign="top" width="56%" style="BORDER-BOTTOM: black 2px solid">
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                    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">650
                      College Road East, CN 5308, Suite 3100, Princeton,
                      NJ</font></div>
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                <td valign="top" width="25%" style="BORDER-BOTTOM: black 2px solid">
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                    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">08540</font></div>
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              <tr>
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                    of Principal Executive Offices)</font></div>
                </td>
                <td valign="top" width="2%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">&#160;</font></td>
                <td valign="top" width="25%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">(Zip
                    Code)</font></div>
                </td>
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        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">Registrant&#8217;s
          telephone number, including area code: <u>(609) 750-8200</u></font></div>
        <div><br></div>
        <div>
          <table cellpadding="0" cellspacing="0" width="100%">
  
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                <td valign="top" width="83%" style="BORDER-BOTTOM: black 2px solid"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">&#160;</font></td>
              </tr>
  
          </table>
        </div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">(Former
          Name or Former Address, if Changed Since Last Report)</font></div>
        <div><br></div>
        <div><br></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">Check
          the
          appropriate box below if the Form 8-K filing is intended to simultaneously
          satisfy the filing obligation of the registrant under any of the following
          provisions (<em>see </em>General Instruction A.2. below):</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div>
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                <td style="WIDTH: 36pt">
                  <div>&#160;</div>
                </td>
                <td style="WIDTH: 27pt">
                  <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;"><font style="DISPLAY: inline;" face="Wingdings">&#168;</font></font></div>
                </td>
                <td>
                  <div align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">Written
                    communications pursuant to Rule 425 under the Securities Act (17
                    CFR
                    230.425)</font></div>
                </td>
              </tr>
  
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        </div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div>
          <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">
  
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                <td style="WIDTH: 36pt">
                  <div>&#160;</div>
                </td>
                <td style="WIDTH: 27pt">
                  <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;"><font style="DISPLAY: inline;" face="Wingdings">&#168;</font></font></div>
                </td>
                <td>
                  <div align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">Soliciting
                    material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
                    240.14a-12)</font></div>
                </td>
              </tr>
  
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        </div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div>
          <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">
  
              <tr valign="top">
                <td style="WIDTH: 36pt">
                  <div>&#160;</div>
                </td>
                <td style="WIDTH: 27pt">
                  <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;"><font style="DISPLAY: inline;" face="Wingdings">&#168;</font></font></div>
                </td>
                <td>
                  <div align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">Pre-commencement
                    communications pursuant to Rule 14d-2(b) under the Exchange Act
                    (17 CFR
                    240.14d-2(b))</font></div>
                </td>
              </tr>
  
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        </div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div>
          <table cellpadding="0" cellspacing="0" id="list" width="100%">
  
              <tr valign="top">
                <td align="right" style="WIDTH: 63pt">
                  <div><font style="DISPLAY: inline; FONT-SIZE: 10pt;" face="Wingdings">&#168;&#160;&#160;</font></div>
                </td>
                <td>
                  <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">Pre-commencement
                    communications pursuant to Rule 13e-4(c) under the Exchange Act
                    (17 CFR
                    240.13e-4(c))</font></div>
                </td>
              </tr>
  
          </table>
        </div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div id="PGBRK" style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
          <div id="FTR">
            <div id="GLFTR" style="WIDTH: 100%" align="left">
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          <div id="PN" style="PAGE-BREAK-AFTER: always">
            <div style="WIDTH: 100%; TEXT-ALIGN: center">
            </div>
            <div style="WIDTH: 100%; TEXT-ALIGN: center">
              <hr style="COLOR: black" noshade size="2">
            </div>
          </div>
          <div id="HDR">
            <div id="GLHDR" style="WIDTH: 100%" align="right">
            </div>
          </div>
        </div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;"><strong>Item
          2.02&#160;&#160;&#160;&#160;&#160;Results of Operations and Financial
          Condition.</strong></font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div><br></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">On
          August
          8, 2007, Cytogen Corporation announced its financial results for the second
          quarter and six months ended June 30, 2007.&#160;The full text of the August 8,
          2007 press release issued in connection with the announcement is attached
          as
          Exhibit 99.1 to this Current Report on Form 8-K.</font></div>
        <div><br></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">The
          information in this Form 8-K and the exhibit attached hereto shall not be
          deemed
  &#8220;filed&#8221; for purposes of Section 18 of the Securities Exchange Act of 1934 (the
  &#8220;Exchange Act&#8221;) or otherwise subject to the liabilities of that section, nor
          shall it be deemed incorporated by reference in any filing under the Securities
          Act of 1933 or the Exchange Act, except as expressly set forth by specific
          reference in such a filing.</font></div>
        <div><br></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;"><strong>Item
          9.01&#160;&#160;&#160;&#160;&#160;Financial Statements and
          Exhibits.</strong></font></div>
        <div><br></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">(c)&#160;&#160;Exhibits.</font></div>
        <div><br></div>
        <div>
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                <td valign="top" width="12%" style="BORDER-BOTTOM: black 2px solid">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
                    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">Exhibit
                      No.</font></div>
                  </div>
                </td>
                <td valign="top" width="2%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">&#160;</font></td>
                <td valign="top" width="50%" style="BORDER-BOTTOM: black 2px solid">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
                    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">Description</font></div>
                  </div>
                </td>
              </tr>
              <tr>
                <td valign="top" width="12%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">99.1</font></div>
                </td>
                <td valign="top" width="2%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">&#160;</font></td>
                <td align="justify" valign="top" width="50%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">Press
                    Release of Cytogen Corporation dated August 8,
                    2007</font></div>
                </td>
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        </div>
        <div><br></div>
        <div>&#160;</div>
        <div id="PGBRK" style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
          <div id="FTR">
            <div id="GLFTR" style="WIDTH: 100%" align="left">
            </div>
          </div>
          <div id="PN" style="PAGE-BREAK-AFTER: always">
            <div style="WIDTH: 100%; TEXT-ALIGN: center">
            </div>
            <div style="WIDTH: 100%; TEXT-ALIGN: center">
              <hr style="COLOR: black" noshade size="2">
            </div>
          </div>
          <div id="HDR">
            <div id="GLHDR" style="WIDTH: 100%" align="right">
            </div>
          </div>
        </div>
        <div><br>&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;"><strong>SIGNATURES</strong></font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">Pursuant
          to the requirements of the Securities Exchange Act of 1934, the Registrant
          has
          duly caused this report to be signed on its behalf by the undersigned hereunto
          duly authorized.</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div><br></div>
        <div>
          <table cellpadding="0" cellspacing="0" width="100%">
  
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                <td valign="top" width="48%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">&#160;</font></td>
                <td align="left" colspan="2" valign="top" width="41%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">CYTOGEN
                    CORPORATION</font></div>
                </td>
              </tr>
              <tr>
                <td valign="top" width="48%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">&#160;</font></td>
                <td valign="top" width="2%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">&#160;</font></td>
                <td valign="top" width="50%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">&#160;</font></td>
              </tr>
              <tr>
                <td valign="top" width="48%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">&#160;</font></td>
                <td align="left" valign="top" width="2%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">By:</font></div>
                </td>
                <td valign="top" width="50%" style="BORDER-BOTTOM: black 2px solid">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
                    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">/s/&#160;&#160;Michael
                      D. Becker</font></div>
                  </div>
                </td>
              </tr>
              <tr>
                <td valign="top" width="48%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">&#160;</font></td>
                <td valign="top" width="2%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">&#160;</font></td>
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                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">Michael
                    D. Becker</font></div>
                </td>
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                <td valign="top" width="2%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">&#160;</font></td>
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                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">President
                    and Chief Executive Officer</font></div>
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        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;">Dated:&#160;&#160;&#160;&#160;&#160;&#160;August
          8, 2007</font></div>
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        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman;"><strong>EXHIBIT
          INDEX</strong></font></div>
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                      No.</font></div>
                  </div>
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                  </div>
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                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman;">99.1</font></div>
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                    Release of Cytogen Corporation dated August 8,
                    2007</font></div>
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text: form8-k.htm
  UNITED
          STATES
  SECURITIES
          AND EXCHANGE COMMISSION
  WASHINGTON,
          D.C. 20549
  ________________________________________
  FORM
          8-K
  CURRENT
          REPORT
  PURSUANT
          TO SECTION 13 OR 15(d) OF THE
  SECURITIES
          EXCHANGE ACT OF 1934
  Date
          of
          report (Date of earliest event reported):
  August 8, 2007
  CYTOGEN
          CORPORATION
  ________________________________________
  (Exact
          Name of Registrant as Specified in Charter)
  Delaware
  000-14879
  22-2322400
  (State
                    or Other Jurisdiction of Incorporation)
  (Commission
                    File Number)
  (I.R.S.
                    Employer Identification No.)
  650
                      College Road East, CN 5308, Suite 3100, Princeton,
                      NJ
  08540
  (Address
                    of Principal Executive Offices)
  (Zip
                    Code)
  Registrant's
          telephone number, including area code:
  (609) 750-8200
  (Former
          Name or Former Address, if Changed Since Last Report)
  Check
          the
          appropriate box below if the Form 8-K filing is intended to simultaneously
          satisfy the filing obligation of the registrant under any of the following
          provisions (
  see
  General Instruction A.2. below):
  ¨
  Written
                    communications pursuant to Rule 425 under the Securities Act (17
                    CFR
                    230.425)
  ¨
  Soliciting
                    material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
                    240.14a-12)
  ¨
  Pre-commencement
                    communications pursuant to Rule 14d-2(b) under the Exchange Act
                    (17 CFR
                    240.14d-2(b))
  ¨
  Pre-commencement
                    communications pursuant to Rule 13e-4(c) under the Exchange Act
                    (17 CFR
                    240.13e-4(c))
  Item
          2.02     Results of Operations and Financial
          Condition.
  On
          August
          8, 2007, Cytogen Corporation announced its financial results for the second
          quarter and six months ended June 30, 2007. The full text of the August 8,
          2007 press release issued in connection with the announcement is attached
          as
          Exhibit 99.1 to this Current Report on Form 8-K.
  The
          information in this Form 8-K and the exhibit attached hereto shall not be
          deemed
  "filed" for purposes of Section 18 of the Securities Exchange Act of 1934 (the
  "Exchange Act") or otherwise subject to the liabilities of that section, nor
          shall it be deemed incorporated by reference in any filing under the Securities
          Act of 1933 or the Exchange Act, except as expressly set forth by specific
          reference in such a filing.
  Item
          9.01     Financial Statements and
          Exhibits.
  (c)  Exhibits.
  Exhibit
                      No.
  Description
  99.1
  Press
                    Release of Cytogen Corporation dated August 8,
                    2007
  SIGNATURES
  Pursuant
          to the requirements of the Securities Exchange Act of 1934, the Registrant
          has
          duly caused this report to be signed on its behalf by the undersigned hereunto
          duly authorized.
  CYTOGEN
                    CORPORATION
  By:
  /s/  Michael
                      D. Becker
  Michael
                    D. Becker
  President
                    and Chief Executive Officer
  Dated:      August
          8, 2007
  EXHIBIT
          INDEX
  Exhibit
                      No.
  Description
  99.1
  Press
                    Release of Cytogen Corporation dated August 8,
                    2007