RNA-Tagging Machinery (IMAGE) European Molecular Biology Laboratory Caption Structure of the RNA-tagging machinery shows that only one pair of proteins (blue) can add tags to the RNA (red) at a time. Credit EMBL/Carlomagno Usage Restrictions EMBL press and picture releases including photographs, graphics and videos are copyrighted by EMBL. They may be freely reprinted and distributed for non-commercial use via print, broadcast and electronic media, provided that proper attribution to authors, photographers and designers is made. High-resolution copies of the images can be downloaded from the EMBL web site: <a target="_blank"href="http://www.embl.org">www.embl.org</a>. 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.