Amaia Martinez-Usatorre (IMAGE) Ecole Polytechnique Fédérale de Lausanne Caption Amaia Martinez-Usatorre, lead author on the study and a postdoc in Professor Michele De Palma’s lab. Credit © Murielle Gerber / EPFL Usage Restrictions Credit must be given to the creator. Adaptations must be shared under the same terms. License CC BY-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.