Chromatin Backbone (IMAGE) Northwestern University Caption Northwestern University researchers have discovered how chromatin folds at the single-cell level. They found that it folds into a variety of tree-like domains spaced along a chromatin backbone. Credit Northwestern University Usage Restrictions Credit must be given 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.