<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM STATEMENT OF OPERATIONS AND BALANCE SHEET AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH 10Q. </LEGEND> <CIK> 0000882104 <NAME> PROTEIN DESIGN LABS, INC. <MULTIPLIER> 1000 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-1996 <PERIOD-START> JAN-01-1996 <PERIOD-END> JUN-30-1996 <CASH> 5,345 <SECURITIES> 97,391 <RECEIVABLES> 1,854 <ALLOWANCES> 0 <INVENTORY> 0 <CURRENT-ASSETS> 104,590 <PP&E> 15,474 <DEPRECIATION> (7,633) <TOTAL-ASSETS> 112,431 <CURRENT-LIABILITIES> 3,556 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 156 <OTHER-SE> 108,719 <TOTAL-LIABILITY-AND-EQUITY> 112,431 <SALES> 0 <TOTAL-REVENUES> 10,576 <CGS> 0 <TOTAL-COSTS> 16,253 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> (5,677) <INCOME-TAX> 0 <INCOME-CONTINUING> (5,677) <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> (5,677) <EPS-PRIMARY> (.37) <EPS-DILUTED> (.37)