Oligodendrocytes Producing Myelin (IMAGE) University of Edinburgh Caption The image shows oligodendrocyte cells before and after activin-A treatment. Oligodendrocytes that are not making myelin are in green. Oligodendrocytes that are starting to make myelin are in red. Activin-A treatment of oligodendrocytes stimulates them to start making myelin. Credit Veronique Miron, MRC Centre for Regenerative Medicine, University of Edinburgh. 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.