PALO ALTO, Calif.--(BUSINESS WIRE)--Affymax, Inc. (Nasdaq:AFFY) today announced the appointment of Keith Leonard and Christi van Heek to the company’s board of directors. Mr. Leonard has nearly 20 years of operations experience at biotechnology companies, including 13 years at Amgen, Inc. Ms. van Heek’s 25 years in the healthcare and biotechnology industry includes 13 years at Genzyme Corporation where she most recently served as president, Therapeutics Division.