Hippocampus Region (image) University of California - Davis Caption There are three slices taken by MRI through the right hippocampus of an 8-year-old. The cornu ammonis (CA) 1 is in yellow, CA3/dentate gyrus in blue and subiculum is colored purple. UC Davis researchers were able to track how these regions change in size as children enter adolescence and develop memory abilities. Credit Simona Ghetti and Joshua Lee, UC Davis. Usage Restrictions May be used with acknowledgement of the source. 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.