GAMBRO GROUP PRESS RELEASE

               GAMBRO AB COMPLETES TENDER OFFER FOR REN CORPORATION-USA

FOR IMMEDIATE RELEASE

     New York, October 18, 1995 -- Gambro AB (NASDAQ: GAMBY) announced today
that its subsidiary, COBE Laboratories, Inc. ("COBE"), had completed its tender
offer for REN Corporation-USA (NASDAQ: RENL).

     The tender offer expired as scheduled at 12:00 midnight, New York City
time, on Tuesday, October 17, 1995.  Based on a preliminary count, 8,355,796
shares were tendered and accepted for payment, representing, together with the
shares already owned by COBE, approximately 94 percent of the outstanding shares
of common stock of REN Corporation-USA.

     REN Acquisition Corp., a COBE subsidiary established for this purpose,
will merge with REN Corporation-USA.  After the merger, COBE will own 100 
percent of REN Corporation-USA.  Shares of REN Corporation-USA which were not
tendered into the offer will be cancelled and converted automatically into the
right to receive US$20.00 per share in cash.


                                        ***

For further information, contact:

Inger Larsson, Director Corporate Communications, Gambro AB, Tel: +46-46-169-167
or +46-70-529-9090
Raymond F. McNulty, Managing Director, Citigate, Inc., Tel: +1-212-809-2575
Maria C. Stokes, Associate, Citigate, Inc., Tel: +1-212-809-2575


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