New Organ Discovered (image) NYU Langone Health / NYU School of Medicine Share Print E-Mail Caption A newfound organ, the interstitium, is seen here beneath the top layer of skin, but is also in tissue layers lining the gut, lungs, blood vessels, and muscles. The organ is a body-wide network of interconnected, fluid-filled compartments supported by a meshwork of strong, flexible proteins. Credit Illustration by Jill Gregory. Printed with permission from Mount Sinai Health System, licensed under CC-BY-ND. 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.