Buonasera in lab (IMAGE) University of Alaska Fairbanks Caption Tammy Buonasera, assistant professor at the University of Alaska Fairbanks, looks at test results from her study of proteins in tooth enamel. Credit Photo courtesy of Tammy Buonasera Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND 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.