Mouse Hippocampus (IMAGE) Trinity College Dublin Caption This is a mouse hippocampus injected with adeno-associated virus (AAV) expressing green fluorescent protein. Credit Dr Matthew Campbell, Trinity College Dublin. 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.