EXHIBIT 23.2



               CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS

We consent to the reference to our firm under the caption "Experts" in the
Registration Statement (Form S-3 No. 333-68548) and related Prospectus of
Genzyme Corporation for the registration of Genzyme General Division common
stock and to the incorporation by reference therein of our report dated
January 31, 2001, with respect to the financial statements of Focal, Inc.
included in its Annual Report (Form 10-K) for the year ended December 31,
2000 filed with the Securities and Exchange Commission.

                                                          /s/ Ernst & Young LLP

Boston, Massachusetts
September 20, 2001