Glowing Cells (IMAGE) UT Southwestern Medical Center Caption Glowing cells express green fluorescent protein, which scientists used along with gene-editing techniques to uncover a new microRNA mechanism. Credit UT Southwestern Medical Center Usage Restrictions None 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.