Illustration (IMAGE) UT Southwestern Medical Center Caption Liver section images showing fluorescently label hepatocytes in distinct zones. Each row is a different strain of lineage tracing mouse. Credit UT Southwestern Medical Center 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.