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                            -----------------------------

                          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):
                                     July 9, 1996

                                           

                                    XYTRONYX, INC.          
                            -----------------------------
                (Exact name of registrant as specified in its charter)
                                           


                                       Delaware            
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                    (State or other jurisdiction of incorporation
                                           

              0-14838                         36-3258753          
         --------------------            ----------------------
    Commissioner File Number)       (IRS Employer Identification Number)
                                           
                                           


                                6555 Nancy Ridge Drive
                                      Suite 200
                             San Diego, California  92121

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                 (Address of principal executive offices) (Zip Code)
                                           
                                           

Registrant's telephone number, including area code:  (619) 550-3900
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Item 5.  Other Events. 

         The News Release dated July 9, 1996 announcing approval of Agreement
and Plan of Merger by majority of shareholders of Binary Therapeutics, Inc.,
filed as Exhibit 99.55 hereto, is hereby incorporated into this Report by
reference.

    


Item 7.  Financial Statements, Pro Forma Financial Information and Exhibits.

    (c)  EXHIBITS.      The following exhibit accompanies this Report:

    Exhibit
    Number                        Exhibit Description
    -------                       -------------------

    99.55          News Release dated July 9, 1996 announcing approval of
                   Agreement and Plan of Merger by majority of
                   shareholders of Binary Therapeutics, Inc.
    
    
    
    
    
    
    
    
    

                                      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.

                                       XYTRONYX, INC.


                                       By:  /S/ DALE SANDER
                                           ----------------
                                            Dale Sander
                                            Chief Financial Officer

Date: July 17, 1996


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                                  INDEX TO EXHIBITS


                                            
Exhibit                                                             Sequentially
Number     Description of Exhibit                                  Numbered Page
- -------    ----------------------                                  -------------
    
 99.55     News Release dated July 9, 1996 announcing approval of
           Agreement and Plan of Merger by majority of shareholders
           of Binary Therapeutics, Inc.


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