Self-assembling hydrogel (VIDEO) Johns Hopkins University This video is under embargo. Please login to access this video. Caption A video clip shows how the liquid substance self-assembles into a gel when injected into a saline solution. Credit CREDIT: Johns Hopkins University. Usage Restrictions none 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.