Press photo, Anna-Maria Lampousi (IMAGE) Karolinska Institutet Caption Anna-Maria Lampousi, PhD student at the Institute of Environmental Medicine, Karolinska Institutet. Credit Stefan Zimmerman Usage Restrictions To be used only in connection with said article. 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.