<ARTICLE>                     5
<LEGEND>
     This schedule contains financial informaiton extracted from the financial
     statements for Repligen Corporation and is qualified in its entirety by
     reference to such financial statements.
</LEGEND>
<CIK>                         0000730272
<NAME>                        Repligen
<MULTIPLIER>                                   1,000
<CURRENCY>                              U.S.-DOLLARS
       
                                      
<PERIOD-TYPE>                                 12-MOS
<FISCAL-YEAR-END>                        MAR-31-1997
<PERIOD-START>                           APR-01-1996
<PERIOD-END>                             MAR-31-1997
<EXCHANGE-RATE>                                    1
<CASH>                                         3,466
<SECURITIES>                                      72
<RECEIVABLES>                                    600
<ALLOWANCES>                                    (65)
<INVENTORY>                                      452
<CURRENT-ASSETS>                               4,691
<PP&E>                                         1,140
<DEPRECIATION>                                 (349)
<TOTAL-ASSETS>                                 5,621
<CURRENT-LIABILITIES>                            702
<BONDS>                                            0
<PREFERRED-MANDATORY>                              0
<PREFERRED>                                        0
<COMMON>                                           0
<OTHER-SE>                                     4,919
<TOTAL-LIABILITY-AND-EQUITY>                   5,621
<SALES>                                        1,554
<TOTAL-REVENUES>                               3,802
<CGS>                                            537
<TOTAL-COSTS>                                  4,293
<OTHER-EXPENSES>                                   0
<LOSS-PROVISION>                                   0
<INTEREST-EXPENSE>                                 0
<INCOME-PRETAX>                                    0
<INCOME-TAX>                                       0
<INCOME-CONTINUING>                                0
<DISCONTINUED>                                     0
<EXTRAORDINARY>                                    0
<CHANGES>                                          0
<NET-INCOME>                                   (491)
<EPS-PRIMARY>                                  (.03)
<EPS-DILUTED>                                  (.03)