CONSENT OF INDEPENDENT ACCOUNTANTS
We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (No.'s 333-65518 and 333-50038) of AeroGen, Inc. of our report dated February 1, 2002 relating to the consolidated financial statements of AeroGen, Inc., which appears in this Form 10-K.
/s/ PricewaterhouseCoopers LLP
San
Jose, California
March 25, 2002