FARMINGDALE, N.Y.--(BUSINESS WIRE)--Feb. 21, 2006--Enzo Biochem, Inc. (NYSE:ENZ) announced today that its subsidiary, Enzo Life Sciences, Inc., has been granted U.S. Patent No. 6,992,180, entitled "Oligo-or polynucleotides comprising phosphate-moiety labeled nucleotides," describing techniques applicable to a wide variety of DNA diagnostic and medical research products.