Fission yeast cells (IMAGE) Virginia Tech Caption Fission yeast cells with single mRNA molecules of two ultra-low noise genes labeled with fluorophores (green and magenta). The cell nucleus, where RNA is synthesized, and the cell outlines are labeled in blue. Credit Photo courtesy of Silke Hauf. Usage Restrictions Must credit License Original 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.