The tell-tale gut (IMAGE) Emory University Caption Tagging different strains of bacteria in different fluorescent colors allows the researchers to determine what strain an insect carries in its gut. Credit Photo by Jason Chen Usage Restrictions Must include 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.