Ulcerative Colitis Tissue (image) Georgia Institute of Technology Share Print E-Mail Caption Colon tissue samples of (top) healthy tissue; (middle) ulcerative colitis treated with siRNA delivered by thioketal nanoparticles; (bottom) untreated ulcerative colitis. The tissue treated with siRNA-loaded thioketal nanoparticles exhibits intact epitheliums, well-defined fingerlike "crypt" structures and lower levels of inflammation like those seen in healthy tissue. Credit Scott Wilson Usage Restrictions None Share Print E-Mail 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.