David Killilea (IMAGE) American Society for Nutrition Caption David Killilea, PhD, a researcher at the University of California San Francisco, processes samples to study the nutrient contents of wheat kernels, flours and breads. Credit Holly Duden, UCSF Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. Adaptations must be shared under the same terms. License CC BY-NC-SA 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.