<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from the
condensed financial statements of T Cell Sciences, Inc. for the Year ended
December 31, 1996 and is qualified in its entirety by reference to such
financial statements.
</LEGEND>
<CURRENCY> U.S. DOLLARS
       
                             
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-START>                             JAN-01-1996
<PERIOD-END>                               DEC-31-1996
<EXCHANGE-RATE>                                      1
<CASH>                                      12,591,770
<SECURITIES>                                         0
<RECEIVABLES>                                   19,541
<ALLOWANCES>                                         0
<INVENTORY>                                     23,947
<CURRENT-ASSETS>                            13,277,381
<PP&E>                                       3,026,009
<DEPRECIATION>                             (2,514,369)
<TOTAL-ASSETS>                              17,223,685
<CURRENT-LIABILITIES>                        1,604,458
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        24,966
<OTHER-SE>                                  15,594,261
<TOTAL-LIABILITY-AND-EQUITY>                15,619,227
<SALES>                                        591,246
<TOTAL-REVENUES>                             1,114,500
<CGS>                                          358,644
<TOTAL-COSTS>                               12,867,762
<OTHER-EXPENSES>                             (282,980)
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                           (680,198)
<INCOME-PRETAX>                           (10,790,084)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                       (10,790,084)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                              (10,790,084)
<EPS-PRIMARY>                                   (0.50)
<EPS-DILUTED>                                   (0.50)