RNA-DNA nanofibers (IMAGE) University of North Carolina at Charlotte Caption RNA-DNA nanofibers have been designed to bind and inactivate thrombin and due to their size have a prolonged circulation in bloodstream. This induced anticoagulation process can be reversed by the kill switch mechanism that also results in production of smaller complexes for accelerated renal excretion. Credit UNC Charlotte Usage Restrictions Available for publication 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.