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 dated February 26, 1999, which report
includes an explanatory paragraph regarding substantial doubt about Celerity
Systems, Inc.'s ability to continue as a going concern, relating to the
financial statements, which appears in Celerity Systems, Inc.'s Annual Report on
Form 10-KSB for the year ended December 31, 1998. We also consent to the
reference to us under the heading "Experts" in such Registration Statement.

PricewaterhouseCoopers LLP

Knoxville, TN

February 14, 2000