Ning Xu Landén, Karolinska Institutet (image) Karolinska Institutet Share Print E-Mail Caption Ning Xu Landén is an assistant professor at Karolinska Institutet in Sweden. Credit Courtesy of Karolinska Institutet Usage Restrictions This image may only be reproduced in contection to media reports about the research of Dr. Ning Xu Landén's research. 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.