Acetylation and Amyloid Beta Toxicity (IMAGE) Michigan Technological University Caption Fluorescent images show concentrations of tau protein aggregates in soma of neuronal cells that can cause neurodegenerative diseases like Alzheimer's. On amyloid beta peptides, chemical modification at lysine 16 can promote these aggregates. Credit Ashutosh Tiwari/Michigan Tech Usage Restrictions None 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.