Exhibit 23.1

                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

As independent public accountants, we hereby consent to the use in this
registration statement of our report dated March 25, 2002 on Aderis
Pharmaceuticals, Inc.'s consolidated financial statements included herein and
to all references to our Firm included in this registration statement.

/s/ Arthur Andersen LLP

Boston, Massachusetts
April 16, 2002