Fat Zebrafish (IMAGE) Duke University Caption Yellow highlights the distribution of fat cells in this adult zebrafish. Duke researchers have discovered that a gene called Plexin D1 controls both where fat is stored and how fat cells are shaped. Credit James E. Minchin 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.