Borrelia burgdorferi Infection of Mice (IMAGE) University of Utah Health Caption Analysis of joint tissue reveals reactive and thickened synovium covering the tendon sheath. Credit Sarah Whiteside 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.