Altered Brain Cells (IMAGE) Boston Children's Hospital Caption When NRG1-erbB signaling was blocked, oligodendrocytes from the brain's frontal cortex had a less complex structure than normal, forming fewer branches. Shown are three-dimensional reconstructions of oligodendrocytes from a normal mouse (left) and a mutant mouse (right). Credit Image courtesy Joshua Murtie, Ph.D., Children's Hospital Boston. Usage Restrictions Please credit as indacated. 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.