<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)