<i>Cell</i> Cover (IMAGE) Stowers Institute for Medical Research Caption Only when Med26 lets go of transcription start-site factors and connects with elongation factors can transcription commence. Credit Image courtesy of Yuki Takahashi, with permission of Cell Press Usage Restrictions For one time use only. 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.