EXHIBIT 32 (a)

                             CERTIFICATE 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  Annual  Report  of  Enzo  Biochem,   Inc.,  and
Subsidiaries  ("the  Company")  on Form 10-K for the fiscal  year ended July 31,
2003 as filed with the  Securities  and Exchange  Commission  on the date hereof
(the  "Report"),  I,  Elazar  Rabbani,  Ph.D.,  Chief  Executive  Officer of the
Company, certify, pursuant to 18 U.S.C. ss. 1350, as adopted pursuant to ss. 906
of the Sarbanes-Oxley Act of 2002, that:

          (1)  The Report fully complies with the requirements of Section 13 (a)
or 15 (d) of the Securities Exchange Act of 1934; and

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







         /s/ Elazar Rabbani, Ph.D.





         Elazar Rabbani, Ph.D.
         Chief Executive Officer



         October 29, 2003