Tubulin Strands (IMAGE) University of Washington Caption Zooming in to a mammalian kidney cell, long strands of tubulin proteins before (top) and after (bottom) expansion treatment, shows the improved resolution of expansion microscopy. Credit Joshua Vaughan Usage Restrictions Must include credit 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.