The Intestinal Barrier (image) Weill Cornell Medicine Share Print E-Mail Caption The intestinal barrier. Color-enhanced image of the intestinal lining, which serves as a barrier and limits dissemination of the microbiota. Credit Drs. Greg Sonnenberg and David Artis, Weill Cornell Medicine. 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.