Exhibit 23.1 CONSENT OF INDEPENDENT ACCOUNTANTS ---------------------------------- We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (Nos. 33-64440 and 33-77576) of Endogen, Inc. of our report on the financial statements of the research products and operations of T Cell Diagnostics, Inc. dated May 17, 1996 which report appears in this Current Report on Form 8-K/A of Endogen, Inc. [Signature of Price Waterhouse LLP] Price Waterhouse LLP Boston, Massachusetts May 20, 1996 8