Abundance of Dendrite in the Hippocampus (IMAGE) Cell Press Caption The abundance of dendrite in the hippocampus of animals that underwent extinction training in combination of HDACis (lower) is significantly higher than in animals s that underwent extinction training alone (upper). Credit <i>Cell</i>, Gräff et al. Usage Restrictions Credit Required 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.