EXHIBIT 23

            Consent of Independent Registered Public Accounting Firm

We consent to the  incorporation  by  reference in the  Registration  Statements
(Forms S-3, No. 333-138417, 333-15533, 33-58736, 33-60229, 33-78760, 33-72170,
33-68542) and (Forms  S-8,  No.  33-45348,  33-75466,  33-88826,   333-87153,
333-89308  and 333-123712) of Enzo Biochem, Inc. and in the related  Prospectus
of our report dated October 5, 2006, with respect to the consolidated financial
statements and schedule of Enzo Biochem, Inc., included in this Form 10-K/A for
the fiscal year ended July 31, 2006.



/s/ Ernst & Young LLP
Melville, New York
March 28, 2007