Thrombus Formation as Viewed in a T-TAS (IMAGE) Kumamoto University Caption Both conventional and direct oral anticoagulants (DOACs) are effective, but DOACs are shown here to form thrombi faster than warfarin. It is thought that the faster formations would occur at the site of blood vessel injury. Credit Dr. Masanobu Ishii and Associate Professor Koichi Kaikita Usage Restrictions This image may only be used in conjunction with the accompanying release, or stories written about the work described in the release with reference to the original work. 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.