Zebrafish CAS9 (IMAGE) NIH/National Human Genome Research Institute Caption NHGRI scientists are homing in on specific genes in zebrafish to help them better understand the function of genes in people. Credit Darryl Leja, NHGRI 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.