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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0000912057-96-008051.txt : 19960506
<SEC-HEADER>0000912057-96-008051.hdr.sgml : 19960506
ACCESSION NUMBER:		0000912057-96-008051
CONFORMED SUBMISSION TYPE:	SC 14D1/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		19960503
SROS:			NYSE

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MEDISENSE INC /MA/
		CENTRAL INDEX KEY:			0000922872
		STANDARD INDUSTRIAL CLASSIFICATION:	IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES [2835]
		IRS NUMBER:				042728017
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			0331

	FILING VALUES:
		FORM TYPE:		SC 14D1/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-43527
		FILM NUMBER:		96556175

	BUSINESS ADDRESS:	
		STREET 1:		266 SECOND AVE
		CITY:			WALTHAM
		STATE:			MA
		ZIP:			02154
		BUSINESS PHONE:		6178956000

	MAIL ADDRESS:	
		STREET 1:		266 SECOND AVE
		CITY:			WALTHAM
		STATE:			MA
		ZIP:			02154

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ABBOTT LABORATORIES
		CENTRAL INDEX KEY:			0000001800
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				360698440
		STATE OF INCORPORATION:			IL
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 14D1/A

	BUSINESS ADDRESS:	
		STREET 1:		100 ABBOTT PARK ROAD
		STREET 2:		D-322 AP6D
		CITY:			ABBOTT PARK
		STATE:			IL
		ZIP:			60064-3500
		BUSINESS PHONE:		(708)-937-6100
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 14D1/A
<SEQUENCE>1
<DESCRIPTION>SCHEDULE 14D1/A
<TEXT>

<PAGE>

                          SECURITIES AND EXCHANGE COMMISSION
                                WASHINGTON, D.C. 20549
                             ___________________________

                                  SCHEDULE 14D-1/A
                             ___________________________

                      TENDER OFFER STATEMENT PURSUANT TO SECTION
                   14(D)(1) OF THE SECURITIES EXCHANGE ACT OF 1934
                             ___________________________

                                   MEDISENSE, INC.
                              (NAME OF SUBJECT COMPANY)
                             ___________________________

                                AAC ACQUISITION, INC.,
                             a wholly owned subsidiary of
                                 ABBOTT LABORATORIES

                                      (BIDDERS)
                             ___________________________

                                   Common Stock and
                                 Class B Common Stock

                            (TITLE OF CLASS OF SECURITIES)
                             ___________________________

                                      584960108

                        (CUSIP NUMBER OF CLASS OF SECURITIES)
                             ___________________________

                                   Jose M. de Lasa
                           Senior Vice President, Secretary
                                 and General Counsel
                                 Abbott Laboratories
                                 100 Abbott Park Road
                           Abbott Park, Illinois 60064-3500
                                    (848)937-6100

                    (NAME, ADDRESS AND TELEPHONE NUMBER OF PERSON
                 AUTHORIZED TO RECEIVE NOTICES AND COMMUNICATIONS ON
                                  BEHALF OF BIDDER)

                                       Copy to:
                                   Robert A. Helman
                                 Mayer, Brown & Platt
                               190 South LaSalle Street
                                  Chicago, IL 60603
                                    (312)782-0600

                                  Page 1 of 4 Pages

<PAGE>

CUSIP No.:  584960108                 14D-1                    Page 2 of 4 Pages

1.       Name of Reporting Person:  AAC Acquisition, Inc.
         SS or IRS Identification No. of Above Person: None.
         Name of Reporting Person:  Abbott Laboratories
         SS or IRS Identification No. of Above Person: 36-0698440
________________________________________________________________________________

2.       Check the Appropriate Box if a Member of a Group:       (a)  / /
                                                                 (b)  / /
________________________________________________________________________________

3.       SEC Use Only:
________________________________________________________________________________

4.       Sources of Funds:  WC
________________________________________________________________________________

5.       Check if Disclosure of Legal Proceedings is Required
         Pursuant to Items 2(e) or 2(f):                              / /
________________________________________________________________________________

6.       Citizenship or Place of Organization:  Massachusetts (AAC
         Acquisition, Inc.); Illinois (Abbott Laboratories)
________________________________________________________________________________

7.       Aggregate Amount Beneficially Owned by Each Reporting
         Person:  19,861,187 Shares
________________________________________________________________________________

8.       Check if the Aggregate in Row (7) Excludes Certain Shares:   / /
________________________________________________________________________________

9.       Percent of Class Represented by Amount in Row (7):  98.37%
________________________________________________________________________________

10.      Type of Reporting Person:     CO (AAC Acquisition, Inc.)
                                       CO (Abbott Laboratories)
________________________________________________________________________________

                                          2

<PAGE>

    This Amendment No. 3 amends and supplements the Tender Offer Statement on
Schedule 14D-1 dated April 4, 1996, as amended (the "Schedule 14D-1") of Abbott
Laboratories, an Illinois corporation ("Parent"), and AAC Acquisition, Inc., a
Massachusetts corporation and wholly-owned subsidiary of Parent (the
"Purchaser"), filed in connection with the Purchaser's offer to purchase any and
all shares of the common stock, $.01 par value per share (the "Common Stock")
and Class B common stock, $.01 par value per share (the "Class B Common Stock"
and together with the Common Stock, the "Shares") of MediSense, Inc., a
Massachusetts corporation (the "Company"), upon the terms and subject to the
conditions set forth in the Schedule 14D-1 (the "Offer").  Capitalized terms
used but not otherwise defined herein shall have the meanings assigned to those
terms in the Schedule 14D-1.

ITEM 5.   PURPOSE OF THE TENDER OFFER AND PLANS OR PROPOSALS OF THE BIDDER.

    On May 2, 1996, pursuant to the terms of the Merger Agreement, Richard C.E.
Morgan, John F. Gaither, Jr., Raymond D. Oddi, Kenneth E. Quickel, Jr., M.D.,
Peter R. Rosenblatt and James R. Tobin each resigned as directors of the Company
and Gary P. Coughlan, Miles D. White and Jose M. de Lasa, designees of Parent,
were elected as directors of the Company.

ITEM 6.   INTEREST IN SECURITIES OF THE SUBJECT COMPANY.

    Purchaser has been informed that, notwithstanding an earlier report from
the Depositary, a total of 19,861,187 Shares in fact were validly tendered and
not withdrawn as of the expiration of the Offer, including 2,217,972 Shares
which were tendered pursuant to guaranteed delivery procedures.  Purchaser has
accepted for payment all Shares validly tendered and not withdrawn prior to the
expiration of the Offer.  As a result, Parent and Purchaser beneficially own
98.37% of the outstanding Shares on a fully diluted basis.

    Due to the reliance by the Purchaser on the Depositary's earlier report,
the Purchaser previously reported that fewer Shares had been tendered in
response to the Offer.

                                          3

<PAGE>

                                      SIGNATURE

    After due inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.


Dated:  May 2, 1996


                                  AAC ACQUISITION, INC.


                                  /s/  Gary P. Coughlan
                                  -----------------------------------------
                                  Name:  Gary P. Coughlan
                                  Title:  Vice President and Treasurer


                                  ABBOTT LABORATORIES


                                  /s/  Gary P. Coughlan
                                  -----------------------------------------
                                  Name:  Gary P. Coughlan
                                  Title:  Senior Vice President, Finance
                                            and Chief Financial Officer

                                          4
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