Time-lapse Video of Gial Cell Movement (video) Society for Neuroscience Loading video... Caption This time-lapse video shows oligodendrocytes cross the glial barrier and myelinate moto axons in mutant zebrafish that lack Schwann cells. Credit Appel et al. Usage Restrictions Please contact SfN Public Information before using. 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.