MENLO PARK, Calif. (AP) — Facebook says the chancellor of the University of California at San Francisco, Susan Desmond-Hellmann, will join its board of directors.

She will be the second woman elected to the Menlo Park, Calif., company's board, joining Facebook's No. 2 executive, Sheryl Sandberg. The company named Sandberg to the body last June after criticism that its directors were all men.

Before serving as chancellor, Desmond-Hellmann was an executive at biotechnology drugmaker Genentech, which markets some of the best-selling cancer drugs in the world. She is a doctor with a specialty in treating cancer.

Facebook Inc.'s board also includes Netflix Inc. chief Reed Hastings, entrepreneurs Marc Andreessen and Peter Thiel, and Washington Post Co. CEO Donald Graham. Facebook CEO and founder Mark Zuckerberg is chairman of the board, which now has nine members.