[2] Bull & Lifshitz, LLP Announces Class Periods for Class Action Complaints.

NEW YORK--(BUSINESS WIRE)-Dec. 17, 1999--The following was released today by Bull & Lifshitz, LLP:

Notice to purchasers or acquirors of the following securities for the following class periods: -0-

CORPORATION                    CLASS PERIOD       PARTICIPATION
                                                  DEADLINE(a)
Abercrombie &
 Fitch Co. (NYSE: ANF - news) 10/08/99 - 10/13/99      12/20/99
Abbott Laboratories
 (NYSE: ABT - news)           03/17/99 - 11/02/99      12/20/99
Baker Hughes Inc.
 (NYSE: BHI - news)           07/24/98 - 12/08/99      02/07/00
Bank One Corp.
 (NYSE: ONE - news)           10/22/98 - 11/10/99      02/15/00
CareMatrix Corp.
 (NASDAQ:CMDC - news)         10/28/98 - 10/07/99      01/03/00

Plains All American
 Pipeline  (NYSE: PAA - news) 11/17/98 - 11/26/99      01/28/00
Pulsepoint Communications,
 Inc.(PLPT - news)            PLPT shares exchanged
                              for Unisys shares
                              in connection with the
                              Merger on or about
                              08/27/99                 12/27/99

Tyco International
 Ltd. (NYSE: TYC - news)      10/01/98 - 12/01/99      02/07/00
Unisys Corp.
 (NYSE:UIS - news)            05/04/99 - 10/14/99      12/27/99

You should be aware that class action complaints involving the securities of the above companies were filed on behalf of investors by the law firm of Bull & Lifshitz, LLP, often in cooperation with other major experienced securities firms. Bull & Lifshitz, LLP has extensive experience in prosecuting investor class actions.

If you purchased the securities of any of the companies listed above during the Class Period, you may be a member of the class. If you wish to discuss these cases or have any questions concerning your rights or interests, please contact Bull & Lifshitz, LLP, at 888/893-1844 (toll free) or 212/869-9449, fax number 212/869-5632 or by e-mail at [e-mail].

The date by which an application must be made to the appropriate court to serve as lead plaintiff of the class.