Electron micrograph of Sup35NM fibrils (IMAGE) St. Petersburg State University Caption Data obtained in the Resource Centre 'The Centre for Molecular and Cell Technologies' of the St Petersburg University Research Park Credit SPbU 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.