CONSENT OF INDEPENDENT ACCOUNTANTS
We hereby consent to the incorporation by reference in this Registration Statement on Form S-8 of our report dated February 9, 2001, relating to the consolidated financial statements which appear in AeroGen, Inc.'s Annual Report on Form 10-K for the year ended December 31, 2000.
/s/ PricewaterhouseCoopers LLP
San
Jose, California
July 20, 2001