<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM FORM
10-Q FOR THE PERIOD ENDED 10/31/99.
</LEGEND>
<CIK> 0000704562
<NAME> TECHNICLONE CORPORATION
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS

                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                         APR-30-2000
<PERIOD-START>                            MAY-01-1999
<PERIOD-END>                              OCT-31-1999
<EXCHANGE-RATE>                                 1,000
<CASH>                                            644
<SECURITIES>                                        0
<RECEIVABLES>                                     419
<ALLOWANCES>                                      362
<INVENTORY>                                        62
<CURRENT-ASSETS>                                1,071
<PP&E>                                          3,192
<DEPRECIATION>                                  1,322
<TOTAL-ASSETS>                                  3,089
<CURRENT-LIABILITIES>                           6,307
<BONDS>                                             0
<COMMON>                                           79
<PREFERRED-MANDATORY>                               0
<PREFERRED>                                         0
<OTHER-SE>                                    (6,742)
<TOTAL-LIABILITY-AND-EQUITY>                    3,089
<SALES>                                             0
<TOTAL-REVENUES>                                  124
<CGS>                                               0
<TOTAL-COSTS>                                   8,599
<OTHER-EXPENSES>                                    0
<LOSS-PROVISION>                                    0
<INTEREST-EXPENSE>                                176
<INCOME-PRETAX>                               (8,651)
<INCOME-TAX>                                        0
<INCOME-CONTINUING>                           (8,651)
<DISCONTINUED>                                      0
<EXTRAORDINARY>                                     0
<CHANGES>                                           0
<NET-INCOME>                                  (8,651)
<EPS-BASIC>                                    (0.11)
<EPS-DILUTED>                                  (0.11)