PolySTAT Fibrin Network Comparison (IMAGE) University of Washington Caption Blood clots treated with PolySTAT (second from right) had denser fibrin networks, which helps reinforce and strengthen the clots. Credit University of Washington Usage Restrictions None License Licensed 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.