EXHIBIT 10.24 October 11 , 1999 Dr. N. Kirby Alton 815 Country Valley Road Thousand Oaks, CA 91362 Re: Agreement Regarding Part-Time Special Assignment Position --------------------------------------------------------- Dear Kirby: On behalf of Amgen...Agreement Regarding Part-Time Special Assignment Position • March 7th, 2000 • Amgen Inc • Biological products, (no disgnostic substances) • California
