<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE QUALIFIED PERIOD ENDED OCTOBER 31, 1998 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS. </LEGEND> <CIK> 0000316253 <NAME> ENZO BIOCHEM <MULTIPLIER> 1,000 <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> JUL-31-1999 <PERIOD-START> AUG-31-1998 <PERIOD-END> OCT-31-1998 <CASH> 39,249 <SECURITIES> 0 <RECEIVABLES> 25,322 <ALLOWANCES> (11,308) <INVENTORY> 1,338 <CURRENT-ASSETS> 55,964 <PP&E> 9,739 <DEPRECIATION> (7,063) <TOTAL-ASSETS> 72,680 <CURRENT-LIABILITIES> 2,179 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 249 <OTHER-SE> 92,161 <TOTAL-LIABILITY-AND-EQUITY> 72,680 <SALES> 10,524 <TOTAL-REVENUES> 10,524 <CGS> 4,134 <TOTAL-COSTS> 10,271 <OTHER-EXPENSES> 3,699 <LOSS-PROVISION> 2,438 <INTEREST-EXPENSE> (510) <INCOME-PRETAX> 763 <INCOME-TAX> 58 <INCOME-CONTINUING> 705 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 705 <EPS-PRIMARY> .03 <EPS-DILUTED> .03