Immunofuorescence Image (image) Neural Regeneration Research Caption This is an immunofuorescence image of oligodendrocyte precursor cells after differentiation induced by bone morphogenetic protein-4. Seven days later, the bodies of the glial fbrillary acidic protein-positive cells became larger and processes became thicker. These glial fibrillary acidic protein-positive cells presented many thin and long processes. Credit Neural Regeneration Research Usage Restrictions None 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.