<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
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<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
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<NET-INCOME>                                       705
<EPS-PRIMARY>                                      .03
<EPS-DILUTED>                                      .03