The Genetics of Cancer (IMAGE) University of Delaware Caption When viewed under a fluorescence microscope, the individual probes light up each RNA in an individual cell. By using a color combination method, UD molecular biologist Mona Batish is able to distinguish which tagged RNA are linear (yellow) and circular (green). Credit Photo by Kathy F. Atkinson 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.