Carbon-11 (IMAGE) University of Missouri-Columbia Caption The scientists used the radioisotope carbon-11 — created by a cyclotron at the University of Missouri Research Reactor (MURR) — to help them trace how smoke impacts a sunflower’s vascular system, or the system that transports carbon, water and micronutrients throughout the plant. Credit University of Missouri Usage Restrictions For media use. 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.