The 'Weakest Link' in the Aging Proteome (IMAGE) Salk Institute Caption This super resolution image shows the nucleus of a cell from a rat brain. Each red spot is a individual nuclear pore complex, cellular structures found on the envelope surrounding the nucleus, which are crucial to communications between the nucleus and the rest of the cell. The Salk scientists studied long lived proteins that serve as important structural components of these complexes. Credit Courtesy Brandon Toyama, Waitt Advanced Biophotonics Center Usage Restrictions News media reproduction to illustrate this story permitted with proper attribution as provided above. For one time use only. License Licensed 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.