Progenitor Cells Migrating (image) Johns Hopkins Medicine Caption This is a montage of three images collected at one-week intervals showing an oligodendrocyte precursor cell migrating towards a lesion (white). Credit Ethan Hughes and Dwight Bergles Usage Restrictions Please credit to the researchers. 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.