Characterization of anticoagulant fibers. (IMAGE) University of North Carolina at Charlotte Caption (a) Predicted 3D structures and AFM images of fibers, kill-switches, and their reassociation products. On the basis of the models, the distances between the aptamers in each structure were estimated (Table S1). (b) Root-mean-square fluctuation (RMSF) of NU, RA, and NU/RA fibers and (c) modeled interactions of NU fiber and thrombin. The numbered residues indicate where the interactions occur. 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.