Ze'ev Ronai, PhD (IMAGE) Sanford Burnham Prebys Caption Ze’ev Ronai, PhD, is stepping down as director of the National Cancer Institute-designated cancer center at Sanford Burnham Prebys, effective August 1. Credit Sanford Burnham Prebys Usage Restrictions none License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.