EXHIBIT 23.1
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) and related Prospectus of XOMA Ltd. for the
registration of 10,000,000 common shares and to the incorporation by reference
therein of our report dated February 18, 2000 with respect to the 1999 and 1998
consolidated financial statements of XOMA Ltd. included in its Annual Report, as
amended (Form 10-K/A), for the year ended December 31, 1999, filed with the
Securities and Exchange Commission.
/S/ ERNST & YOUNG LLP
Palo Alto, California
November 15, 2000
