C. elegans, a soil-dwelling roundworm (IMAGE) Florida Atlantic University Caption Using C. elegans, a soil-dwelling roundworm, researchers first tested glyphosate alone and then both the U.S. and U.K. formulations of Roundup® from two distinct time periods. Credit Florida Atlantic University Usage Restrictions Credit: Florida Atlantic University 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.