Cohesin Complex (IMAGE) Children's Hospital of Philadelphia Caption The RAD21 protein (green) helps close the cohesin complex "bracelet" (colored objects) surrounding chromosomes in DNA (gray). Credit The Children's Hospital of Philadelphia Usage Restrictions None License Licensed 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.