Nancy Horton, University of Arizona (image) University of Arizona Share Print E-Mail Caption Nancy Horton is an associate professor of biochemistry and molecular biophysics at the University of Arizona in Tucson. Credit Chad Park. Usage Restrictions This photo may only be used to illustrate a story about the research described in the accompanying news release, Share Print E-Mail 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.