Yeast Cells (image) ETH Zurich Share Print E-Mail Caption Scientists found in yeast cells protein aggregates (light green spots). As cells age and divide, these aggregates become more frequent (micrograph). Credit ETH Zurich / Juha Saarikangas Usage Restrictions The image may be used only if ETH Zurich is specifically mentioned as the copyright holder and only in connection with this release. Further distribution - for example, via download links - is not permitted. 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.