Graphic illustration (IMAGE) Umea University Caption Mediator moves from the beginning to the end of ribosomal genes to interact with Lsm1-7 as cell density increases. Credit Wael R Abdel-Fattah Usage Restrictions No restrictions. License Public Domain 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.