Yeast Cells with GFP and Amyloids (IMAGE) University of Arizona Caption The fluorescent green chunks in these yeast cells are prion proteins that have assumed the shape that aggregates into clumps called amyloids. The prion proteins in these cells are tagged with a marker that fluoresces green under UV light. Credit Serio laboratory/ University of Arizona molecular and cellular biology Usage Restrictions This image may only be used to illustrate a story about the research described in the release, “Yeast are first cells known to cure themselves of prions.” The credit must run with the images. 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.