Myelin Recovery Image (IMAGE) University of Wisconsin-Madison Caption hree cross-section images of nerve tissue from cats, each showing an individual oligodendrocyte cell (marked with “O”) among nerve cell axons surrounded by dark-colored sheaths of myelin. Mature myelin sheaths (around axons marked with asterisks) are thick. Thin sheaths (marked with arrows) are remyelinated by the pictured oligodendrocyte. Images from Duncan et al, PNAS, 2018. Credit Images from Duncan et al, PNAS, 2018 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.