Fruit fly brain (IMAGE) University of Southampton Caption The brain of a 7-day-old fruit fly with Tau expressed in a neuronal circuit used by the fly in olfactory memory. The green outlines the neurons, which are starting to swell and degenerate due to the Tau protein. The red shows where Tau is building up in clusters along the neurons, starting to form the clumps that eventually become rope-like fibrils. Credit University of Southampton Usage Restrictions Please credit University of Southampton 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.