Exhibit 23.4

                       CONSENT OF INDEPENDENT ACCOUNTANTS

We consent to the incorporation by reference in this Registration Statement on
Form S-4 of Genzyme Corporation of our report dated February 22, 2000, relating
to the financial statements of RenaGel LLC, which appears in GelTex
Pharmaceuticals, Inc.'s Annual Report on Form 10-K for the year ended December
31, 1999.

/s/ PRICEWATERHOUSECOOPERS LLP

Boston, Massachusetts
November 1, 2000