Beads on a String (image) University of Arizona Caption Of 1,040 drugs tested, only four caused nodules to form inside the neurites, resembling beads on a string. All four drugs were statins. Credit Linda Restifo/University of Arizona Usage Restrictions This visual may only be used in conjunction with reporting/posting of this news release. Image/video credit must be included exactly as indicated. 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.