Synovial tissue (IMAGE) Rockefeller University Caption In this image, abnormal synovial tissue is shot through with excessive tissue growth, including blood vessels (in magenta). Synovium should be thin and smooth. Credit Bai et al. Usage Restrictions Image may only be used to illustrate research described in the accompanying release. 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.