Microtubules (IMAGE) Neural Regeneration Research Caption The microtubules were arranged in a disorganized manner and not parallel to each other in the neonatal rat hippocampus after ketamine treatment (electron microscope, x 3,500). Credit <i>Neural Regeneration Research</i> 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.