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Exhibit 23.3
CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS
As independent public accountants, we hereby consent to the incorporation by
reference in this registration statement of our report dated February 7, 2000
on the financial statements of BioSphere Medical, Inc. and subsidiaries
included in Sepracor's Form 10-K/A for the year ended December 31, 1999 and
to all references to our Firm included in this registration statement.
/s/ Arthur Andersen LLP
ARTHUR ANDERSEN LLP
Boston, Massachusetts
June 14, 2000
