EXHIBIT 23.1

                       CONSENT OF INDEPENDENT ACCOUNTANTS

     We hereby consent to the incorporation by reference in this Registration
Statement on Form S-3 of our report, which is based in part on the report of
other auditors, dated February 7, 2001 relating to the financial statements,
which appears in Regeneron Pharmaceuticals, Inc.'s Annual Report on Form 10-K
for the year ended December 31, 2000. We also consent to the reference to us
under the heading "Experts" in such Registration Statement.

                                          PRICEWATERHOUSECOOPERS LLP

New York, New York
November 29, 2001